What right do you have to ask for "documents" what like my ID? Are you insane. People's privacy is worth much more then $15 and it's not even a garanteed $15 it's a maybe. Infact let me work it out. If house edge is 1% and you need $575 that is 575/15=39 not 35 so you can't even count.
50% - 39=11%
Your chance to take away $15 is 11%
The point of gambling on bitcoin industry is because we are trying to be anonnymous but if they are asking for KYC with ot without permission then this site is not worth to play. I do not think people will like to give any of their information just to get $15. Of course this does not worth of anything to play, more over they even ask us to wagered X amount before we can cash out