I have a phpBB3 forum at http://marioforums.forumatic.com/
and I'm having a problem- whenever I try to log into the ACP, it asks for a password as expected, but when I enter the password, instead of redirecting me to the ACP, it goes right back to the authentication screen, and I can't get into the ACP as a result.
Clearing board cookies doesn't work.
This is the type of host where you have no actual access to the server, so I can't replace/edit any files.
I have contacted the host multiple times with no reply.
I hope I can get this fixed!