I think this a joke right? 990x?
Its not a joke. It means your TOTAL wagered has to accumulate up to 9.90 if you accept the .01 Free Bonus Money. This does not mean you have to build it up to 9.90 ... I just started this half hour ago maybe, and I am up to .1+ and have around 2.8 total wagered. It goes by fast, well worth it. Good Bonus 88!
As for cashout, I am sorry to hear the website did not payout. Could you provide more details?
Would this site be worth cashing in 10 BTC?