I haven't heard of this site ,so tried googling their account here
https://bitcointalk.org/index.php?action=profile;u=507022the site isn't trusted and their thread wasn't that active , so I'm not sure why you decided to deposit such huge amount of money in such site while you have way better options to gamble on
it's clear that they don't care about paying back users , their account was active yesterday so maybe you can contact them
but if they decided to close their site I really doubt that they will even pay you back a satoshi , the community here can't do anything to fix that