Once your server got updated to WHM cPanel 11.53+ and enabled Two-Factor Authentication (new feature from cPanel) while your WHM have RV2Factor enabled before, your WHM will become inaccessible but redirects to API Manager of RVGlobalsoft instead.

This happens due to cPanel 11.53 provides Two-Factor Authentication which its work duplicated RV2Factor if you enabled both.

You will need to select one of the 2-step Authentication above, RV2Factor or Two-Factor Authentication.

If you choose Two-Factor Authentication, you can fix the problem by resetting configuration in this file:

File: /var/cpanel/cpanel.config

Take it as the following values.

SecurityPolicy::RV2Factor=0

SecurityPolicy::TwoFactorAuth=1

To set “SecurityPolicy::RV2Factor=0” will mean to leave Two-Factor Authentication work fine.

If you choose RV2Factor, please disable Two-Factor Authentication in WHM -> Security Center -> Two-Factor Authentication, and take it OFF.