I am trying to set up remote authentication, by following this guide  https://help.zoho.com/portal/kb/articles/setting-up-remote-authentication.

However when I fill in the details on the setup page (Remote Login URL, Remote Logout URL, etc), I always get the feedback that I need to logout, and just after there is a popup telling me that URLs and IPs are invalid.

Then I logout, and try to login using my mapped domain, I get a 'Not Found'.

When logging in using the 'safe url' ( https://support.zoho.com/support/<myportalname>/RLConfig.do?actionName=showRL), I can se that both remote authentication and my mapped domain are cleared.

What should I do?