1
I had a problem with two of my websites. Suddenly, I couldn't log in anymore.
The problem was that XOOPS couldn't set the cookies properly. The cause was an incorrect value in the mainfile.php.
Example:
Web host's domain:
https://myhoster.comMy website's domain:
https://mywebsite.comIn the mainfile.php, there was
define('XOOPS_COOKIE_DOMAIN', 'myhoster.com');
instead of
define('XOOPS_COOKIE_DOMAIN', 'mywebsite.com');
Since it worked for years, I didn't recognize the problem. I suspect the host made some changes to the settings, causing the issue to suddenly appear.
You may have/get the same problem. I yes, then check your mainfile.php.
Many thanks to Mamba for identifying the issue.