Verifying KYC didn't even take at least a week or even more. Sometime it can be a trick from the untrusted casino to refuse to pay the users that winning the game. If the casino didn't have enough money to pay and that's the only trick that being used by the casino to avoid to pay the users.
It doesn't make sense to get a delay. Basically verying it doesn't even take so many days or even weeks.
I consider that as a trick.
When a player gets a big win it makes sense for the casino to try to verify that everything is in order, however I agree that many casinos use this as an excuse to try to delay as much as possible the payment of that money because they are looking for an excuse so they do not have to pay the money in full, now sometimes they actually find something which allows them to rightfully deny part or all the profits, but once they realize everything is in order they should pay immediately the money they owe the player or risk their reputation by not doing so.
They are risking their business. If they are out there to do business better to make the assessment as quick as they can, the annoyed gambler will no longer use the platform if they suffer from that kind of delay. It's true that verifying KYC and reviewing the account should not take that long, and also true that gambling house uses this excuse to delay the payment.
but good business owners will not take that risk. They will resolve this asap to make sure that the gambler will trust them and to make
them to keep coming back. If they've got a good amount of capital, they will not allow any problem to happen. Sooner or later, the amount
will comeback, maybe not that quickly, but the house always got the advantage.