I withdrew from FT 1.5k and was insta approved. I'm from Slovakia.
Well, I don't think EU players' money would be in danger because of this all, because FBI nor US government can't stop them from serving non-US players.
!!!BUT!!! this can can start big panic wave of withdrawing. And that can cause big trouble. It's like when there starts a rumor about a healthy bank, that the bank has problems, the bank WILL have problems because people will be uncertain and will withraw moeny. But banks nowadays holds only ~10% in liquidity. I bet the same is with poker rooms because there's no way a 5% of money would be asked to cash out in a single week. Unless something like this happens. Unless they have some other arrangements for situations like this I'm not aware of, I think in few hours they won't be able to proceed withdrawals because of lack of liquidity.
Of course, I might be mistaken