I got this, try this step
Go to Mw2 main folder
Look for a folder named " alterIWnet "
Delete everything and paste this
Make sure to delete the spot that has the YOURNAME typed in it and write your name.Code:[Configuration] Server=server.alteriw.net WebHost=auto Nickname=YOURNAME [Dynamic] HackWarningShown=True
The problem was that there is a lot of servers, I think you joined the wrong one, this one makes sure that you're in the alteriw server.