ToME: the Tales of Maj'Eyal

I just logged on for the first time in a couple years, and all my classes have become locked. This is despite logging into my account through the game and being able to see all my previously unlocked character profiles. Is there a way to return my game to the correct state?

I'd say to restart the game a couple time, I've had it happen before after switching computer or while switching version. After a while it updated and i got all my unlocks again. Sometimes it's gradual, like you get your races, or your difficulties, but not your classes! It should sort itself out.