Yes there is,you can check it on your profile page, you can find it by clicking the "My account" tab or click your email/username on the top of the page. Then click the bonuses tab on the profile page, you will see how many percent you have wagered so far.
Please, try to use any WebKit browser. "
what that means and is there any solution ?
a link for a supported browser would be much appreciated
I had the same problem when I tried to play Head and Tails, the only thing I know about webkit is that it is a default browser in my Iphone and I could play it in my Iphone.
Perhaps you need to try Chrome to play the head and tails game..