I found this casino on Bitcointalk and tried it. Then now I have problem with them and after search on Casino Guru I see a lot of cases "money frozen for 2-3-4 weeks". If it's not scam... I hope they will pay at least after month.
They are not scammers which other posters have already mentioned, but they aren't the best when it comes to resolving complaints quickly which is why their reputation took a hit recently.
If you didn't do anything wrong, you will 100% get your money though it could take months which is why you probably need to strap in for a long ride.