If you tell me how to unlock the new classes i could try it to see if its bugged or not.
Also one more thing regarding general gameplay: keeping the girls moods up while trying to maintain club costs is almost impossible. i was perma rotating them and they still lost mood, the only way would be with the cinema (which you need significant progress for) or buying consumables or perma playing good teacher in the meeting room of the club while rotating and not having another room, which leaves you with the only option to play good teacher until all unlocks and then going corruption.