Level not registered

I played to about level 7 only on multiplayer pre-1.9.1, come back today and play co-op games to level 11 and the demolitions class isn't unlocked, I've reloaded the game three times since then and it's still locked despite being at a level where it should be unlocked

I encountered the same problem, I reached level 22 but commander and observer are not unlocked

Friend has the same problem only he can only play as rifleman.

I've got the same issue right now. Hadn't played the game in a few months, came back today at level 11, and literally nothing is unlocked in the Customize tab on the main menu. Can't access loadouts for anything other than the Rifleman class.