Hi there
I have been playing some time now on justbit.io. Won some money, and my account stands approx 8 mbtc. I asked to withdraw 5 mbtc and today they asked me for KYC procedure (ID and other stuff). By their site states explicitly that they do not ask for KYC if crypto was used to deposit. Update: They confiscated today all my winnings without any other notice, nor waiting for me to send them the documents.
A lot of casinos use "no KYC on deposit" as a marketing strategy. You should have read the rules of their casino website before you made an account and deposited your money there. It baffles me that there are so many people who completely ignore the Terms and Conditions and then proceed to lazily do as they like before they are faced with reality.
Obviously there is no such thing as a legitimate and licensed non-KYC casino because they have to follow laws and regulations, otherwise they would not be allowed to offer gambling services, especially in countries which strictly demand such regulations to be implemented.
Right now your only choice is to present your KYC to them. If you live in a country which is restricted by their ToS then they will disable your account. You will still have a right to take back your full deposited fund amounts, but not your winnings.