I guess there is something wrong with the system, it looks like the owner is AFK as well but hopefully it will be fixed soon. The last winning payment was yesterday (12th) for a bet that was made on 5th. It means that the last winning payout delayed for a week. Did you check it before deciding to place some bets here?
Sorry to hear your issue, but I hope it is just a matter of delayed payment although several days delayed is not good at all for any sites especially for a on chain based game like this.