When I join a server straight after picking my class it wont let me change classes mid game and they all would reset and after I leave the server my rank would reset. So I keep closing and reopening bo1 just to pick a class in game. This bug is very annoying and would appreciate any tips on how to fix this.
@Barmie try repairing your build, and use unlockall instead of grinding. Trust me, it's not worth it to grind just to get your rank reset. However, I can easily change my classes mid-game.