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.
You should use my site we don't ask for KYC ever