Guys,
This is not a bug or problem.
They did with reward system same as they did with free rolls. If you don't have more than 50 USD in your account you will got your rolls reduced 50% and will not be able to activate 100 RP per roll or 1000% bonus.
As i said before, it's time to say goodbye.
How could you possibly know that?
It's not that hard to know if you look what freebitco did with frees roll game.
Anyway, i'll wait for your oficial information. Thanks.