1xbit are scammers. It's sad that you didn't realize that you hadn't known about this before you sent money and started using their site. They have hundreds of scam accusations here and on different website online
Sorry for your loss mate, you'll find them here but the chance of you getting back your lost coin is 25% cause this gambling site has been accused of scamming their users on several occasions
25% is too huge a chance to recover coins from 1xbit. 1% would be more accurate. They always come up with an excuse of suspicious activity or fraud investigation.