PBwiki frustrations today!

Previously anyone could edit our course wiki (1.0) with an invite key. It worked great all last spring and this past summer. This fall, though, numerous students could not get in even though they followed the directions. I watched one gal log in, spell everything correctly, and when she clicked "log in" it simply returned her to the log-in page. Today I created a new 2.0 pbwiki, had to create student accounts (36 of them) and then email the new username and password to each student. Much time has been wasted today. I then had to transfer over all the pages and current material from the old wiki to the new one. Numerous projects have been put on hold. :(