Anyone have problem like me ! When I use trainer COH2 : 3.0.0.9515 in Campaign or Online Mode always have alert " Syn erro" & game failded .
Try to make another user profile on steam, i am not sure if they check on ip address, but i think user profiles only are linked to the game.
Maybe a second user profile solves the sync problem, but don't use trainer online, only in custom online player vs AI matches, and the campaign demo mission.
What demo mission???
P.S. gotta be last patch before release, or else they are running out of numbers..