Losing 10 times in a row at 67 % winning chance seems somehow impossible. 0.002 % chance to hit that, and that is no must, seems legit. to hit that, if it is somehow good for the bank ever and ever again is suspicious. and those losses stumblin around 10 and 30 seem planned.
You aren't familiar with dice probably, There are MUCH worse streaks and at better odds. The idea is provability fairness. as long as it confirm then it's possible...
having a bad streak is annoying and is bad luck, but if provability fairness check and you don't find something wrong, Nothing can be done to actually prove it fraudulent.