I have been testing pligg in two different servers installing it in a subdomain and it works ok. I install it, I log in to the panel and I enter the configuration.
However, after finishing my tests I tried installing it at the root (main domain) and it seems there's no way to log in to the page. Every time I try it I get redirected to the main page and I'm not logged in, but I'm not getting any error or so.
I haven't touched anything of the config since I can't log in.
Do you know which can be the problem?