After more than 3 weeks of waiting, there is still zero solution. Also on Casinu Guru you can read several comparable complaints with sports betting winnings confiscated, from people all over the world. My case is not alone. Whenever you win in sports, Coins.game confiscate your winnings and simply call it "fraud" even if you have not violated any specific terms. An absolute scam and I feel the need to warn others for this.
So a flag has been created and can be supported here: https://bitcointalk.org/index.php?action=trust;flag=3280