Issues in the Client Area or your online store can hurt customers' ability to purchase your products or access their purchased services.
WHMCS recommends several options to help you stop spam orders, and includes support for reCAPTCHA, banning email domains, and more.
Google® reCAPTCHA is a secure tool to help you prevent bots from placing orders, creating accounts, or logging in to your Client Area.
Troubleshoot and resolve Google reCAPTCHA Invalid Site Key errors.