Help with MW2 Liberation?

Ok so I seem to be having a problem no one else has. I had been using VAC chaos 2.15 on the 1.2.208 patch and I clicked on play on Steam without Chaos running and got banned lol. Before the ban, I could get people to join the game. With Chaos running I can get into the game but I can't find one or get anyone to join. I recently switched to Liberation, but I having the same problem. This is what happens. I choose the game type, force host, change the map, and launch the game. I load in and no one joins and the game ends because the enemy team "forfeited". Also, it will sometimes put me in as a spectator and not on a team. Now if I try to just search for a game it doesn't find anyone either. My NAT type is Open. So what do you think the problem could be?