Student Access to wiki space
I've added student to my user list with their Mason email address and some can't access the wiki (they say their password doesn't work).
Did you add them to your wiki using their GMU email address or username? If so, students then may think their password is the same as their Mason NET ID, when if fact they are supposed to create a new for PBworks. So then they may wind up changing their username for PBworks and it doesn't match the one you have in your wiki for the user. You can find out their new username and just add that one to access you wiki, or have them ignore that account and create a new one based on their GMU username.