Yeah, I affairs to say it but yes you are eliminate from the Cup, you won't advance to the playoff round. He got you by away goal.

You can try to report the issue, but I know for sure that they won't do a thing about it even you have screenshots or good evidence.

I know how you feel my friend, I have been there exactly the same your situation. I couldn't go back to sleep after the match. My only best advice to you is move on with it and come back strong in the next season, or delete the game like you never played it before...I know for sure, you will take an option #1. Keep your head up and good luck.