What the hell are all these rollback ...
level up on a ranked server, unlock some weapons and all.
By a mystery, see your level decrease by one or two, experience rollback, items already unlocked re-lock auto ....

How frstrated it is to pay something that doesn't work as intended ...

same topic http://www.gamesas.com/forums/viewtopic.php?f=20&t=12366&p=178942#p178942