That's a bad way to do business, lying to your customers whom they've trusted that they're not going to need any type of KYC to play there and from what OP had said, the withdrawal came from a win so how the hell can that be a possibility that the money comes from a money laundering operation? It's weird thay they've allowed OP to withdraw 3 times with no problem and then do this stuff, maybe OP really did flag some identifiers for a money laundering that the team has put in their site or they're just being an asshole, the only way that I can think that OP has created this kind of problem is that the last 3 withdrawals were consistent to a schedule or something like that.

Before you accuse a casino of scam attempt, you too should have a back up for your claims because you can not be here accusing people of what you do not have proof and backup evidence against them. Do well to present your facts and figures about your claims rather.

If you want  attention as desired, you should quickly do the needful by presenting facts and figures at hand  as to back up your claims.

Possibly you did not read their terms and conditions of service before engaging with them otherwise you would not be complaining. This is the reasons why people are advised to properly take out time to read through terms and conditions before making deposit with casinos so as not to have any issues when withdrawal of wins. People fail to understand this aspect of organisation's.

similar issues like this have been posted against them before, I am not siding with the casino but this is why it is extremely important to read their Terms and Conditions and not just what they advertise on websites or their webpage.

did they specifically mention that the KYC was because of money laundering or fraud suspicions? the KYC request could most likely be just because of their normal procedure just like how they said on their ToS that after registration gamblers shall provide valid identification under KYC.

How much was your total deposit?