https://docs.whmcs.com/9-1/tags/payment-gateways/Recent content in payment-gateways onHugo -- gohugo.iohttps://docs.whmcs.com/9-1/payments/pay-methods/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/pay-methods/Explains the Allow Client Pay Method Removal, Delete Encrypted Credit Card Data, and Delete Encrypted Bank Account Data settings, how default payment methods are chosen, and the steps clients and admins use to manage, update, or delete pay methods and capture payment with Attempt Capture.https://docs.whmcs.com/9-1/payments/payment-gateways/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateways/Covers activating gateways, the Show on Order Form, Display Name, and Convert To For Processing settings, the Merchant, Third-Party, Tokenization, and Manual gateway categories, deactivating or deleting modules, viewing Stripe and PayPal balances, and test card numbers.https://docs.whmcs.com/9-1/payments/accepting-paypal/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/accepting-paypal/Compares PayPal Payments, PayPal Card Payments, PayPal Checkout, PayPal Basic, PayPal Pro Reference Payments, PayPal Website Payments Pro, and PayFlow Pro gateways by support for recurring payments, subscriptions, refunds, reversals, disputes, and 3D Secure.https://docs.whmcs.com/9-1/payments/disputes/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/disputes/Covers the dispute process for Stripe, PayPal Checkout, PayPal Payments, and PayPal Card Payments, the List Disputes, Manage Disputes, and Close Disputes permissions, and steps to submit Stripe evidence, manage PayPal disputes, or close a dispute.https://docs.whmcs.com/9-1/payments/tokenization/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/tokenization/Explains how tokenized gateways store card data remotely versus locally, how WHMCS migrates locally-stored cards to tokens on the next recurring payment, steps to enforce tokenization by hiding non-tokenized gateways from the order form, and the Remote Update Card feature.https://docs.whmcs.com/9-1/payments/custom-gateway-modules/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/custom-gateway-modules/Documents the Dev:Gateway:Config function’s field attributes (FriendlyName, Size, Default, Description) for text, password, yesno, dropdown, radio, and textarea fields, plus the Dev:Gateway:MerchantParamsRefund and Dev:Gateway:Params parameter tables for building a custom gateway module.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/blank-payment-gateway-page/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/blank-payment-gateway-page/Addresses a blank page appearing during payment via a payment gateway module, caused by duplicate files (often .htaccess or php.ini) in the modules/gateway directory, with a fix to locate and remove the duplicate file on self-hosted installations.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/configuration-function-errors/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/configuration-function-errors/Explains the Gateway Module Error: Configuration Function (_config) not found error, caused by a payment gateway module in /modules/gateways missing its required *_config function or by unexpected non-gateway files in that folder, with fixes to add the missing function or remove stray files.https://docs.whmcs.com/9-1/customization/custom-modules/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/customization/custom-modules/Covers the module template override directory structure for customizing provisioning, addon, and payment gateway module templates within a custom theme, version-specific templates for Bootstrap 3 (Six) versus Bootstrap 4 (Twenty-One) themes, service properties for storing key/value data via serviceProperties save() and get() methods, the list of reserved core field names (Username, Password, Domain, License Key, and others), and defining DefaultNonSSLPort and DefaultSSLPort in a module’s MetaData function.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/gateway-module-activation-errors/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/gateway-module-activation-errors/Explains that the Module Log error Failed to initialise payment gateway module: Gateway Module module_name Not Activated occurs when a gateway is sending payment notifications but is not activated under Configuration > System Settings > Payment Gateways, and directs admins to activate and configure the module or contact the gateway’s support team to disable notifications.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/invalid-access-attempt-errors/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/invalid-access-attempt-errors/Explains the Invalid Access Attempt error returned during payment processing when an admin accesses WHMCS using a URL that does not exactly match the WHMCS System URL setting, with a fix to log in using the exact URL configured under Configuration > System Settings > General Settings.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/invalid-login-credentials/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/invalid-login-credentials/Addresses the Check your login credentials error shown in the Getting Started Wizard’s payment setup step, caused by invalid credentials for the selected payment gateway, with a fix to re-verify and re-enter the correct credentials.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/no-gateway-log-entries/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/no-gateway-log-entries/Covers payment processing failures that produce no Billing > Gateway Log entry, typically because the client has no card on file, and walks through checking the client profile’s Summary tab Pay Methods section for a No Pay Methods message, verifying Token ID or Encryption Hash values, and asking the client to re-enter payment details.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/oops-module-not-found-errors/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/oops-module-not-found-errors/Covers the Error: Module Not Found message shown during checkout or invoice viewing and the related The Payment Solution module could not be loaded message on the Payment Gateways list, caused by a missing PHP file in /modules/gateways/, with fixes to restore the file or deactivate the gateway and migrate customers.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-php/opcache-warnings/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-php/opcache-warnings/Explains OPcache-related warnings and stale-cache symptoms, including PayPal Payments gateway activation failures, and instructs disabling the OPcache PHP extension in php.ini and recompiling PHP.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/remote-transaction-failure-errors/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/remote-transaction-failure-errors/Explains the client-facing Remote Transaction Failure. Please Contact Support. error shown for tokenization gateway module payments when the gateway returns an error without a client-friendly response, and directs admins to check the Result and Debug Data columns in Billing > Gateway Log for the underlying gateway error.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/unexplained-declines-and-failures/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/unexplained-declines-and-failures/Covers unexplained credit card declines or payment gateway failures with no single known cause, directing admins to check Billing > Gateway Log for the gateway’s returned response and error codes and to consult the payment gateway’s documentation or support team.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/unsupported-protocol-errors/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-payments/unsupported-protocol-errors/Documents unsupported SSL/TLS protocol error messages, including Error code 35, sslv3 alert handshake failure, and tlsv1 alert protocol version, and lists steps to update PHP, cURL, and the SSL library to resolve outdated TLS negotiation with payment gateways.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/2checkout/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/2checkout/The 2CheckOut third-party gateway module supports one-time, recurring, and refund payments but not reversals or 3-D Secure, requiring configuration of the vendor account number, API credentials, INS secret word, checkout style, recurring billing options, and demo mode settings.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/accept-js-by-authorize-net/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/accept-js-by-authorize-net/The Accept.js by Authorize.net tokenized gateway supports one-time, recurring, and refund payments with remote card update and delete but no 3-D Secure, requiring an SSL-enabled system URL, API Login ID, Transaction Key, and Public Client Key, and supports migrating existing locally-stored cards to Accept.js tokens.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/authorize-net/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/authorize-net/The Authorize.net merchant credit card gateway supports one-time, recurring, and refund payments (no reversals, 3-D Secure, or remote card management), and setup requires entering Authorize.net credentials plus an optional test mode for simulating transactions.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/authorize-net-cim/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/authorize-net-cim/The Authorize.net CIM token gateway stores card data on Authorize.net’s servers for recurring billing, refunds, remote card update/delete, and AddPayMethod API support (no one-time payments or 3-D Secure), and covers login ID/transaction key setup plus the Live/None Validation Mode test setting.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/authorize-net-echeck/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/authorize-net-echeck/The Authorize.net Echeck module processes one-time and recurring payments directly from a bank account, storing details in the client profile for future recurring billing, but does not support refunds, reversals, or 3-D Secure; setup requires Authorize.net Echeck credentials and a custom module name.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/bank-transfer/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/bank-transfer/The Bank Transfer manual-entry gateway displays admin-entered bank routing details, account numbers, and payment references on client invoices, requires manually recording received payments via the invoice Add Payment section, has no test mode, and is an open-source module (alongside Mail In Payment) that can be duplicated for multiple options.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/bitpay/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/bitpay/Lists the BitPay module’s Supported Features (one-time Bitcoin only, no recurring, refunds, reversals, or 3-D Secure), the GMP or BCMATH extension requirement, the steps to generate a POS token in BitPay and paste it into WHMCS, and the testnet token for Test Mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/bluepay/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/bluepay/The BluePay merchant credit card gateway supports one-time, recurring, and refund payments (no reversals, 3-D Secure, or remote card management), and setup requires entering BluePay credentials.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/bluepay-e-check/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/bluepay-e-check/BluePay e-Check, a variant of the BluePay token gateway, supports recurring payments and the AddPayMethod API but not one-time payments, refunds, reversals, or 3-D Secure, and setup requires entering BluePay e-Check credentials.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/bluepay-remote/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/bluepay-remote/BluePay Remote, a variant of the BluePay token gateway, supports recurring payments, remote card updates, and the AddPayMethod API but not one-time payments, refunds, reversals, or 3-D Secure, and setup requires entering BluePay Remote credentials.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/boleto/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/boleto/The Boleto third-party gateway module supports one-time payments only (no recurring, refunds, reversals, or 3-D Secure), with setup requiring only enabling the module and a test mode for simulating transactions.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/ccavenue-api-v2/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/ccavenue-api-v2/The CCAvenue API v2 third-party gateway module supports one-time payments only (no recurring, refunds, reversals, or 3-D Secure), and setup requires the Merchant Id, Access Code, and Working Key from the CCAvenue M.A.R.S. account, plus a test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/ccavenue-legacy/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/ccavenue-legacy/Documents the legacy CCAvenue gateway module, which connects to CC Avenue’s older cc_details.jsp system and supports one-time payments only (no recurring, refunds, reversals, or 3-D Secure); accounts on CC Avenue’s newer system should use the CCAvenue API v2 module instead.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/direct-debit/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/direct-debit/The Direct Debit manual-entry gateway collects client Account Type, Account Holder Name, Bank Name, Bank Account Type, Sort Code/Routing Number, Account Number, Description, and Billing Address for offline bank processing, lists pending payments in the exportable Direct Debit Processing report, has no test mode, and requires manually recording received payments.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/e-path/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/e-path/The E-Path third-party gateway module supports one-time payments only (no recurring, refunds, reversals, or 3-D Secure), with setup requiring only enabling the module and a test mode for simulating transactions.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/eprocessingnetwork/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/eprocessingnetwork/eProcessingNetwork is a merchant credit card gateway using the Authorize.net SIM Emulator integration, supporting one-time and recurring payments but not refunds, reversals, or 3-D Secure; setup requires the account Login ID and a Transaction Key (RestrictKey) from Web Services > Processing Controls, with no test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/eway/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/eway/The eWAY token gateway uses Secure Fields to process one-time, recurring, and refund payments with tokenized card storage and remote card updates (no reversals or 3-D Secure), requiring an API key, password, and public API key from the MYeWAY dashboard, and supports migrating existing tokens from the eWAY Rapid 3.1 module.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/f2b/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/f2b/The F2B third-party gateway module supports one-time payments only (no recurring, refunds, reversals, or 3-D Secure), with setup requiring only enabling the module and a test mode for simulating transactions.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/forte/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/forte/Forte, formerly the ACHDirect module (paymentsgateway.php), is a merchant gateway supporting one-time and recurring payments but not refunds, reversals, or 3-D Secure, and setup requires entering Forte credentials.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/gocardless/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/gocardless/GoCardless automates direct debit payments supporting one-time, recurring, and chargeback reversals (no in-WHMCS refunds or 3-D Secure) in AUD, CAD, DKK, EUR, GBP, NZD, SEK, and USD, and covers account linking, Charge Date Preference, mandate setup/reinstatement/import/removal, and reconfiguring callbacks after a WHMCS move.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/ideal-via-mollie/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/ideal-via-mollie/iDeal via Mollie is a third-party gateway supporting iDEAL 2.0 for one-time payments only (no recurring, refunds, reversals, or 3-D Secure), with setup requiring iDeal via Mollie credentials.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/ip-pay/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/ip-pay/Documents the IP.Pay merchant credit card gateway, listing its feature-table support for one-time, recurring, and refund transactions without reversals, 3-D Secure, or remote card management, and setup steps for entering the terminal ID and enabling test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/mail-in-payment/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/mail-in-payment/Describes the Mail In Payment manual gateway for displaying check-mailing instructions and a display name on invoices, notes its feature table shows no support for one-time, recurring, refund, or 3-D Secure processing, and explains that admins must record payments manually via the invoice’s Add Payment section.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/merchant-partners/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/merchant-partners/Covers the Merchant Partners credit card merchant gateway, listing feature-table support for one-time and recurring payments without refunds, reversals, or 3-D Secure, and setup steps for entering Merchant Partners credentials and enabling Show on Order Form.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/merchant-warrior/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/merchant-warrior/Details the Merchant Warrior credit card merchant gateway, whose feature table shows support for one-time, recurring, and refund transactions but not reversals or 3-D Secure, plus setup steps for entering credentials under All Payment Gateways and enabling test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/moneris/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/moneris/Covers the Moneris Canadian merchant credit card gateway (not compatible with the US-based Moneris company), listing feature-table support for one-time, recurring, and refund transactions without reversals or 3-D Secure, and setup steps requiring Moneris credentials, Address Verification Service activation, and test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/moneris-vault/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/moneris-vault/Covers the Moneris Vault Canadian token gateway (not compatible with the US-based Moneris company), listing feature-table support for one-time, recurring, refund, remote card update/delete, and AddPayMethod API functions, and setup steps requiring Moneris credentials and Address Verification Service activation.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/navigate/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/navigate/Documents the NaviGate merchant credit card gateway, whose feature table lists support for one-time, recurring, and refund transactions but not reversals or 3-D Secure, along with setup steps for entering NaviGate credentials and enabling test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/netbilling/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/netbilling/Documents the NETbilling merchant credit card gateway, listing feature-table support for one-time and recurring payments without refunds, reversals, or 3-D Secure, setup steps for entering NETbilling credentials, and notes that this module has no test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/netregistry-pay/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/netregistry-pay/Documents the Netregistry Pay merchant credit card gateway, listing feature-table support for one-time and recurring payments without refunds, reversals, or 3-D Secure, setup steps for entering Netregistry Pay credentials, and notes that this module has no test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/nochex/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/nochex/Documents the NoChex third-party gateway, whose feature table supports only one-time payments (no recurring, refunds, reversals, or 3-D Secure), and gives setup steps including entering NoChex credentials, enabling test mode, and updating the Call back URL in the NoChex Payments Page Setup to the WHMCS callback path.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/offline-credit-card/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/offline-credit-card/Covers the Offline Credit Card gateway for manually processing payments outside WHMCS with your own processor, noting the Billing > Offline CC Processing list of cards awaiting processing, the CC hash location in configuration.php, feature-table support for one-time and recurring only, and a display-name setup step with no test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/optimal-payments/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/optimal-payments/Documents the Optimal Payments merchant credit card gateway, whose feature table shows support for one-time, recurring, and 3-D Secure transactions but not refunds or reversals, plus setup steps for entering Optimal Payments credentials and enabling test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/pay-junction/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/pay-junction/Documents the Pay Junction merchant credit card gateway, listing feature-table support for one-time, recurring, and refund transactions without reversals or 3-D Secure, setup steps for entering Pay Junction credentials, and notes that this module has no test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/payflow-pro/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/payflow-pro/Covers the deprecated Payflow Pro (PayPal) merchant credit card gateway, recommending PayPal Payments as a replacement, and details feature-table support for one-time, recurring, refund, and 3-D Secure transactions plus steps to retrieve the Processor ID, Merchant ID, and Transaction PW from PayPal’s API Access settings and enable test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/payment-express/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/payment-express/Documents the Payment Express third-party gateway, whose feature table supports only one-time payments (no recurring, refunds, reversals, or 3-D Secure), gives setup steps for entering Payment Express credentials, and notes that this module has no test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/paypal-basic/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/paypal-basic/Covers the deprecated PayPal Basic third-party gateway (recommends PayPal Payments instead), documenting setup fields (PayPal Email, Force One Time Payments, Force Subscriptions, Require Shipping Address, Client Address Matching, API credentials), Instant Payment Notification setup, charset configuration, subscription eligibility rules, and enabling automated refunds via API access.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/paypal-card-payments/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/paypal-card-payments/Covers the PayPal Card Payments token gateway, which augments PayPal Payments with an unbranded credit/debit card checkout option, listing feature-table support for one-time, recurring, refund, reversal, 3-D Secure, and remote card update/delete, plus setup steps requiring PayPal Payments activation first, the default “Pay with Cards” display name, vaulting support, and dispute and balance viewing via Billing menus.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/paypal-checkout/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/paypal-checkout/Covers the deprecated PayPal Checkout third-party gateway (recommends PayPal Payments instead), which offers payment methods including Venmo, PayPal Credit, credit cards, iDEAL, Bancontact, and Sofort, requires HTTPS, and documents feature-table support for one-time, recurring, and refund transactions, express checkout behavior, account unlinking, and dispute management.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/paypal-payments/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/paypal-payments/Covers the PayPal Payments token gateway, which uses PayPal Vault tokenization for one-click card and PayPal payments, listing feature-table support for one-time, recurring, refund, reversal, 3-D Secure, and remote card deletion, and documenting setup (HTTPS, disabling OPcache, linking a PayPal account, sandbox test mode), automated transition from deprecated PayPal modules, vaulting country requirements, and account unlink/refresh options.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/paypal-pro-reference-payments/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/paypal-pro-reference-payments/Covers the deprecated PayPal Pro Reference Payments token gateway, which reduces PCI compliance liability by charging via the last transaction ID instead of storing card data, requires clients to reenter card details when switching gateways, does not support admin-area card updates, and lists feature-table support for one-time, recurring, refund, and 3-D Secure transactions.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/paypal-website-payments-pro/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/paypal-website-payments-pro/Covers the deprecated PayPal Website Payments Pro merchant credit card gateway (recommends PayPal Payments instead), listing feature-table support for one-time, recurring, refund, and 3-D Secure transactions, and setup steps for retrieving Processor ID, Merchant ID, and Transaction PW API credentials from PayPal’s Website Payments API access settings and enabling test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/planet-authorize/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/planet-authorize/Planet Authorize is a merchant credit card gateway emulating Authorize.net, supporting one-time payments, recurring billing, and refunds but not 3-D Secure or remote card management; setup covers Apps & Integrations activation, credentials, the http/https-only Submission URL field, and test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/psigate/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/psigate/PSIGate merchant credit card gateway supports one-time payments, recurring billing, and refunds but not 3-D Secure or remote card management; setup requires entering PSIGate credentials and opening ports 27989 (test) and 27934 (live) for connections.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/quantum-gateway/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/quantum-gateway/Quantum Gateway merchant credit card gateway supports 3-D Secure for Visa and MasterCard along with one-time payments, recurring billing, and refunds; setup covers entering the login ID, generating a Restrict Key, and configuring an MD5 hash secret, with no test mode available.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/quantum-vault/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/quantum-vault/Quantum Vault is the token-storage counterpart to Quantum Gateway, storing card details on Quantum’s servers for rebilling to reduce PCI scope; it supports one-time and recurring payments, refunds, and remote card updates but not 3-D Secure, and has no test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/sagepay/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/sagepay/The deprecated SagePay token gateway works with US- and UK-based accounts, supporting one-time and recurring payments, 3-D Secure, remote card update/delete, and the AddPayMethod API; setup covers vendor ID and currency settings, recommending migration to SagePay Tokens v2.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/sagepay-repeats/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/sagepay-repeats/SagePay Repeat Payments is a token gateway storing card details on SagePay’s server for rebilling, supporting one-time and recurring payments plus 3-D Secure but not refunds; the page recommends migrating to SagePay Tokens v2 and covers credential setup and test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/sagepay-tokens-v2/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/sagepay-tokens-v2/SagePay Tokens v2 token gateway works with US- and UK-based Opayo accounts, supporting one-time and recurring payments, 3-D Secure, and the AddPayMethod API but not refunds; setup covers the Vendor ID and currency conversion, tokenizing cards only during payment with no card vault.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/sagepay-form/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/sagepay-form/SagePay VSP Form (formerly ProtX VSP Form) redirects clients to the Sagepay-hosted page to enter card details, supporting one-time payments only, with no recurring billing, refunds, reversals, or 3-D Secure; setup covers entering credentials and using test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/securepay/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/securepay/SecurePay merchant credit card gateway supports one-time and recurring payments but not refunds, reversals, or 3-D Secure; setup covers entering SecurePay credentials via Apps & Integrations, and the module has no test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/securepay-au/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/securepay-au/SecurePay AU merchant credit card gateway supports one-time and recurring payments but not refunds, reversals, or 3-D Secure; setup covers entering credentials and using test mode with the ABC0001 Merchant ID and abc123 Transaction Password test credentials.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/securetrading/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/securetrading/SecureTrading merchant credit card gateway supports one-time payments, recurring billing, and refunds but not reversals or 3-D Secure; setup covers selecting it under All Payment Gateways in Apps & Integrations and entering credentials, with no test mode available.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/skrill-1-tap/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/skrill-1-tap/Skrill 1-Tap processes repeat and recurring payments via Skrill, supporting one-time payments, recurring billing, and refunds but not 3-D Secure; setup covers credentials, enabling 1-Tap through Skrill, and configuring the Skrill MQI or API password and IP allowlist.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/skrill/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/skrill/Skrill Hosted Payment processes credit card, local, and bank payments in over 40 currencies with fees of 1.9%+0.29 EUR (1%+0.29 EUR for Instant bank transfer), supporting one-time payments and reversals; setup covers credentials and the required Secret Word.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/stripe/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/stripe/Stripe token gateway uses tokenized card storage, supporting one-time and recurring payments, refunds, 3-D Secure, and remote card update/delete; covers restricted API keys, webhooks, Apple Pay/Google Pay/Microsoft Pay/Link buttons, gateway balances, and migrating stored cards.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/stripe-ach/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/stripe-ach/Stripe ACH token gateway processes US bank transfers via Stripe’s PaymentIntents API, supporting one-time payments, recurring billing, refunds, and remote card delete but not 3-D Secure; setup covers restricted API keys and webhook secrets, with ACH clearing in up to five days.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/stripe-dynamic-payments/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/stripe-dynamic-payments/Stripe Dynamic Payments token gateway uses Stripe’s Optimized Checkout Suite to show payment methods by currency, amount, and location, supporting one-time and recurring payments, refunds, 3-D Secure, remote card update/delete, and redirect methods such as PayPal and iDEAL; covers restricted API keys, webhooks, Link, and migrating stored payment methods from legacy Stripe, ACH, and SEPA modules via an Admin Area button or the CLI migrate.php tool.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/stripe-sepa/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/stripe-sepa/Stripe SEPA token gateway processes EUR-only SEPA Direct Debit payments via Stripe’s PaymentIntents API, supporting one-time payments, recurring billing, refunds, and remote card delete but not 3-D Secure; setup covers restricted API keys and webhooks, with debits confirming in up to 14 days.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/turkish-garanti-bank/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/turkish-garanti-bank/Turkish Garanti Bank merchant credit card gateway supports one-time and recurring payments but not refunds, reversals, or 3-D Secure; setup covers obtaining the Merchant Number, Password, and ID from the Virtual POS interface and setting the Isokod value to 949 (YTL) or 840 (USD).https://docs.whmcs.com/9-1/payments/payment-gateway-modules/usa-epay/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/usa-epay/USA ePay merchant credit card gateway supports one-time and recurring payments but not refunds, reversals, or 3-D Secure; setup covers entering API key credentials from the USA ePay portal’s Settings > API Keys page and using test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/worldpay/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/worldpay/WorldPay third-party gateway processes one-time invoices only, with no recurring billing, refunds, reversals, or 3-D Secure support; setup covers WorldPay Merchant Administrator Interface response settings, the required Payment Response Password, and test mode.https://docs.whmcs.com/9-1/payments/payment-gateway-modules/worldpay-futurepay/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-modules/worldpay-futurepay/WorldPay FuturePay token gateway enables recurring billing through WorldPay’s FuturePay service, supporting one-time and recurring payments but not refunds, reversals, or 3-D Secure; setup covers WorldPay response settings, the Payment Response Password, and Auth Mode A capture delay.https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/add-restricted-api-keys-to-stripe/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/add-restricted-api-keys-to-stripe/Distinguishes secret keys (prefixed sk_) from restricted keys (prefixed rk_) in the Stripe Secret API Key field, and covers installing the WHMCS app from the Stripe App Marketplace to generate a restricted key and pasting it into the Payment Gateways configuration.https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/allow-users-to-delete-cards/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/allow-users-to-delete-cards/Enabling Allow Client Pay Method Removal on the Security tab of General Settings adds a Delete action to clients’ saved payment methods list in the Client Area.https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/configure-a-payment-gateway/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/configure-a-payment-gateway/Payment gateways are activated from the Payments category in Apps & Integrations by clicking Activate, entering gateway-specific credentials, and saving changes; PayPal Payments, Stripe, Bank Transfer, and Mail In Payment can also be enabled during the Getting Started Wizard.https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/configure-payment-capture/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/configure-payment-capture/The Payment Capture Settings section of Automation Settings sets Process Days Before Due, Attempt Only Once, Retry Every Week For, CC Expiry Notices Date, and Do Not Remove CC on Expiry to control when and how often WHMCS auto-charges saved payment methods for renewals.https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/configure-paypal-payments/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/configure-paypal-payments/Activating PayPal Payments from Apps & Integrations links a live or Sandbox merchant account, requires disabling OPcache first, auto-enables PayPal Card Payments, and can transition invoices from deprecated PayPal Basic or PayPal Checkout if those modules remain enabled.https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/copy-a-gateway-module/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/copy-a-gateway-module/Shows how to copy banktransfer.php or a similar open-source gateway file, rename its _config and _link functions and FriendlyName value (using a banktransfercopy.php example), and upload the renamed file to the /modules/gateways/ directory on self-hosted installations.https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/migrate-payment-gateways/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/migrate-payment-gateways/Migrating gateways means activating and configuring the new one, then deactivating the old one and reassigning existing services and invoices; a table lists extra steps by path (merchant, third-party, token), and PayPal Basic/Checkout can auto-transition to PayPal Payments instead.https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/migrate-to-paypal-checkout/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/migrate-to-paypal-checkout/Migrating from PayPal Basic subscriptions to PayPal Checkout means activating the new module, unchecking Show on Order Form for PayPal Basic while keeping it active for IPN handling, and running UPDATE queries on tblhosting, tblhostingaddons, tbldomains, and tblinvoices.https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/update-the-paypal-webhook-url/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/payments/payment-gateway-tutorials/update-the-paypal-webhook-url/After a WHMCS URL change, updates the Webhook URL in PayPal’s Developer Portal under the Live Webhooks section of the WHMCS app to point to the new /modules/gateways/callback/paypalwebhooks.php address.