Whitelisting not working issue

Hi,

Hi, I have an IPv4 address that I whitelisted, but it is still not working. The user is getting a 404 error when they go to wp-login.php.

This person has a custom role created only for them using PublishPress Permissions and PublishPress Capabilities. Could this role setup be causing a conflict with WP Cerber? If it is not a conflict, do you have any suggestions on fixing this issue?

Thanks for your help.
Kim