regarding cryptocurrency, while it can provide privacy it doesn't guarantee that you'll have it especially when you are using a centralized platform. also, crypto casinos nowadays are following regulations from their licensor or where they are based and it usually includes KYC.
if you haven't gotten a reply from them they are probably still verifying your information or are investigating something. I'm sure they'll contact you again once they are done with what they are doing.
It’s strange, isn’t it? When they needed to fix a deposit issue, they replied in five minutes, but for $10k locked, they suddenly need weeks.
https://ibb.co/HKPZHQC
I think what acroman meant is showing pictures of what happened exactly, not just your reply to them. Better show a picture of their full email when they requested all these things, maybe a picture of the declined withdrawal and so on. It's very hard to understand the full situation without getting the full picture you know.
I think @holydarkness will be happy to assist you with his contact to BC if you can provide some more information.