WHMCS automatically bans IP addresses after three failed login attempts, or you can permanently ban them manually.
Troubleshoot and resolve issues with blank generated invoices.
If you enable cancellation requests, clients can request cancellation or termination of their services from within the Client Area.
Troubleshoot and resolve issues with domain renewal invoices that the system has set to Cancelled.
Captchas help you prevent bots from placing orders, creating accounts, or logging in to your Client Area. WHMCS includes several captcha types, including a default verification code captcha and options with enhanced protection from Google® reCAPTCHA and hCaptcha.
Customizable panels in the Client Area Homepage display quick information to clients when they log in.
The Client Area can display in Desktop Mode or Responsive Mode, depending on the viewer's device.