Reason? They recieved information regarding tampering with the results of fraud. Which is definitely not true, it was normal game, paid with every other bookmaker. And even if bookmaker decide to void bets, there is no reason to steal deposit.
would you mind posting a screenshot of the part where they said that they received information about you tampering with the result?
I've sent their forum representative a PM in case the representative misses your post if they went online here on the forum.