OP you can rest assured, they won't scam you for small amounts like this. Shuffle is one of the bigger sites these days so they know accusations do more harm than what 1200$ are worth. If there is an issue it might be well warranted and you just need some patience until it gets sorted out, as annoying as it might be. KYC procedures are always a pain in the ass, trust me I know that all too well. Since Holy is already on it I guess you will have an update real soon. Until then the only smart thing you can do is to NOT cancel your withdrawal and NOT pay. Some sites use this as a smart way to get people playing more and then lose the money they intended to withdraw, so it's always necessary to be patient.
They paid me a few hours after that