I guess you were consistently winning which is what gambling sites hate the most. They usually end up limiting or outright banning the player though they don't steal their funds.
I know people who experienced similar issues with FIAT and crypto gambling sites after winning consistently. If this is why you got limited, I suggest moving to other legit sites.
Winning consistently is super rarely because casinos don't design theirs like that. You can win or lose but casinos control the games.
Consistently winning is suspicious and if total value of winnings is big, your account will be further investigated. If you are legit, you will be paid. If you cheated, exploited the casino for your winnings, you will not be paid and your account will be banned.
Winnings don't mean you will be able to claim and withdraw them all. Casinos have rules to limit total wins and reject or approve your withdrawal requests.