You would win if you play small amount bets in this site.
But once you try to deposit and play with huge amount I believe you would never make any withdrawal.
Just sharing my experience, I don't know if it was my bad luck or it is something wrong with the site?
What do you mean, did you win a large amount & can't withdraw? Or simply cannot withdraw a large amount that you deposited beforehand?
Regardless of if you won or not, I think it's safe to assume there is nothing wrong with the site if you know what I mean...
...good luck getting your coins back though, I hope you don't become another statistic in the 'fallen prey to scammers' category (which is 99% of gambling sites, unfortunately)