Thanks for letting us know this does not sound good and to be honest just sounds like not very good excuses not to pay, op your site has been up awhile and if it is provably fair what could possibly be the problem of his wins being 'exceptionally strange' could you give more details please/?
Software bug, crypto weakness, rules implementation...dont know yet. Provably fair system doesnt mean its hacker proof system.
Yes, site has been up awhile but this guy is first who is somehow able to consistently multiply his deposits ten times and eventualy ruin whole game.
I stoped the site until it will be solved. I will deal with this asap.