First i had a problem with my username. I fixed that to delete my account and make another one on the same email adres but on another username. Now if i wanne play online. It says i need to enter my serial (i do this everytime). After that i get the message that i am behind a firewall. (i put down my windows firewall). I can find servers online, but no i get to the problem. If i wanne connect to one of the servers the game says. You're serial is already in usa.

What can i do????