@alextechgr the plugin does not interfere in any way with the way the users are logging-in. There are no actions and filters associated with the login process. It shouldn’t be since the plugin is a performance one and would not go beyond its purpose.
Moreover, if you are saying “I tried resetting the .htaccess after deleting the plugin and that didn’t help“, this also suggests that the problem you’re having has nothing to do with the plugin because it doesn’t alter in any way the .htaccess file, and if it’s deactivated, it shouldn’t mess at all the website, since none of its code is triggered.
Hello Gabe, thanks for the info, issue was with the custom function indeed, however, the plugin did influence the buffer output (or something related) which ended up breaking the functionality when the plugin got disabled.
Either way I recreated the function under a different logic and it is working fine now,
Thanks for your time.