
How much red streak can in a row with 90% chance because i am playing on other dice like PD, Dadice and Safedice with same 90% win chance but in last 3 months i never got more than 4 red streak in a row but something wonder happened a that site or it's just a bug there.

I have no idea if it has a bug or not, but the chance to have that 5 losses with 90% bet is 0.001%, which is in between having 16 and 17 losses with 50% bet. So in that sense, it is not that impossible.