AFAIK issue that handle by license provider itself is very slow to move while in your case you are accused for money laundering and they already refunded your deposit money. I’m just confused on why they refunded you instead of confiscating the money if the issue is money laundering which is against the law.
@Holydarkness might help you give an insight on how to handle your case because in my opinion this case is already at the dead end considering that this casino doesn’t have any representative in the forum.