Try this first.
If you're logged in, log out. Clear the cache. Then try logging in here:
https://www.tetongravity.com/forums/usercp.php
If that doesn't work, you can send one of the mods a PM (Mod Team or the list in the Roolz thread) or -- if you have an alias -- you can report a post (any post but hopefully a somewhat relevant one), describe the problem in that report, and all of the mods will get an email.