I just bought L2 yesterday, and as i was registering it, it said my serial code was already in use. i tried it over and over but nothing worked. what can i do?
Did you buy a new, unopened copy from a store, or did you buy a used copy? If it is the former, take it back and get a replacement product. If it is the latter, you are kind of screwed. Serial codes can only be used once, after that they are bound to the account.