We'll definitely fix that bug when using the multiply button and add a max button in the sometime this week. I'll take a look into adding a option for higher fees. I'll also add a "My bets only" tab tomorrow. Thanks for the feedback.
The amount of players online should increase as time goes on (first day of launch!).
It is just a part of the luck and now continue to play with the same setting and lost all the winnings because got more than 10 continuous losses with 50.8% winning setting.
Anyway, I didn't use my money just tried your site to test and you need to do a lot of improvements. Good luck to you and you need to plan for good promotions and marketing your site.