They are ripping people off. Deposited 0.07 BTC, so not too much, but still money. Gambled a little bit, then submitted a withdrawal. It has been declined, and they asked me to prove (by making a screenshot with bitsler.com opened) that it was I that ordered it. OK, sent.
Then, they asked me to submit my passport. I do not have one, which they probably know actually (filled in my personal data in their website) - since we do not use passports to travel abroad (I'm EU/EEA citizen), only to leave our continent which I didn't - most of EU citizens don't have passports.
And, still, they have totally no verification procedures in their Terms and Conditions, no compliance with EU personal data regulations - and ask for that? How? On what basis?
Simply scam.
Another proof that bitsler is totally a Scam. They are happy if you lose but if you won and you withdraw, they have a problem so you cant withdraw your money. BOOOOOOOOOOOOOOOO Bitsler!