Well, I'm crypto, "not your Keys, not your crypto" is a general rule that I believe applies to other areas of our financial activities as well, like when your money is already there on your account on a centralized casino, you as a gambler have lost custody to the money, you are at the mercy of the casino to pay you your money whenever and immediately you ask to be paid.

But just incase the casino comes up with an excuse as to why they cant pay your money, a reason must be stated which usually differs for different situations, I can't begin to mention some possible reasons here, but it's up to you as the gambler to evaluate the reason that the casino gave as to why they can't process your withdrawal request, tell yourself if they (the casino) are telling the truth or not, them telling a truth or lie will and should determine your next line of action, either to create a scam accusation against the casino on a forum where the casino have a large user base, or try to resolve the issue with them calmly and amicably.