@Betpanda
If the OP used betting techniques then he really sucks at it. At least from the screenshots he showed it seems he lost more bets than he won.
The only thing you could consider "suspicious" is that he only bets on eSports and DOTA 2. Why is that a problem and why would it be an issue if he bets close to the beginning of the event? What if I bet televised English PL matches only after seeing the teams enter the pitch, doing the obligatory handshakes, and the TV showing the lineups? Would you confiscate my money for using unlawful betting techniques? Am I not allowed to bet on matches with odds of around 2.00 to double my money? How exactly was your platform defrauded here?
Exactly what I am wondering, it's so strange. If a player manages his bets well (winning or not), suddenly it's call prohibited betting techniques.
If bookmakers find esports suspicious to bet on they shouldn't offer it. Would really love to hear what they are saying about that. Their "gesture of goodwill" was absolutely nothing. Unless they come up with a real explanation this case stays relevant, at least in my opinion.
Of course there is still the possibility OP did something wrong, not denying that. But for what has been presented here and the useless reply from the casino I don't see why we shouldn't believe OP.