I am also waiting for reply about limits because few days back I try to bet with 0.005 btc but its not works and then I try with very small amount and this was ok so I am understanding there is some problem with site or its limits not working for all hopefully they will give any update about this issue in near future.

yeah not sure why to be honest , limits seem to be only 50$ but the admin said this will change once Beta is over and he stated that Beta is already over
so for people who bet 100$ and more this will be a waste of time since the site doesn't have a search option as well so you need to find the game then bet only 50$
and if you make over 10 bets a day then  this is really a time waste