I recently used Liberation to host a ranked match and fuck up shit with 0121 mod menu, and it works out fine, however, when I didn't start MW2 with liberation, my game cannot join any lobbies, and when I join my friend who is in a party waiting for a lobby, I join, and it still waits, but the second I leave he gets a match, then I can join him in the match. Is there any way I can fix my game? (I am reinstalling the game right now)

I am not banned btw, my VAC Status is "In good standing".

Thanks!