Hi, i am LVL 38 and i only can use my first class, the other are locked. What to do?

Your other classes are probbaly locked because you have annoying weapons, deathstrikes or killstreaks restricted by the server you are playing in.

You mean locked ingame? Or are all weapons locked in create-a-class. This happens to some people. Are you using the english version?

Delete caches.xml, if you cant create a class.

 

If you get a lock key when playing a server and attempting to choose a class, this means one of your weapons is restricted.