UPDATE: Solved, received the money all ok, 31.96860000 BTC.
But still sad about situation and idk should i play there anymore, hope they will solve all problems with payments.
I dont see any problem with their payment, what you need to know is that not all casino can do huge withdrawal instantly. There are some cases that may make the casino need to verify bets and some other things before releasing the withdrawal request. Your withdrawal seems to be fine as you got it in no more than few days.
I also don't see any issue at all it's a big amount it's understandable that the casino will have to replenish their hot wallet to complete the transactions if he wants instant he'll better divide his withdrawal into small amounts we cannot guarantee that Rollbit can make an instant withdrawal if there is a huge amount of withdrawal other casino have maximum withdrawal so they can process it in real time.