Rainbet is one of the most reputed casinos in Bitcointalk. Usually, we don't hear complaints or accusations against it. I suggest that you be more patient until you receive a response. 12 Hours is not a long time to conduct a review, and it came from the game provider side, not Rainbet. I am sure they will reach out to you within the next 12-24 hours. If you didn't commit anything wrong, make sure you will be able to use your account again, without restrictions.
They've reached with post exactly above you.
And for OP, just like
coupable said, you can rest assured that if you did nothing wrong, casinos here with reputation will treat you fairly, so you don't have anything to worry about... that if, you do win fairly. Investigation can take mere days to weeks, and it's completely depends on the provider's own discretion.
Given a representative of Rainbet already take notice of your case, I am sure they'll keep your case in their plate, so I am removing this from mine.