A way out not starting

Well I dont wanna buy the full version cuz i paid half of the game with my friend.
I tried some stuff:
Starting the game as an admin, changing paths of the game, downloading the game again, repaired the game and still nothing.
I tried yesterday to contact the origin support via chat and nothing, got no anwser. This is getting me pissed of. I really want to play the game but if the support is not trying to help its a shame.