If you can't show it on the blockchain, it's like it didn't even happen.
This casino has a history of shady business practices. There are so many red flags. Therefore, your word alone, as a newbie on this forum, is not enough for people to believe you.

What about this thread: 1xbit blocks withdrawals with 0.53 BTC in account ?
Therad has never been updated with concrete evidence that your issue has been resolved. Could you please share the TXID confirming that you successfully withdrew 0.5BTC from the 1xbit platform?