Confirmed. Flagged by provider, namely: Betby.
What does this mean? Is this the answer rollbit gave you? They didn't say if they would unblock my account? And if the problem is on betby, then why did the casino block me supposedly because I have other accounts on their site?
Not verbatim, but in essence yes. You're flagged by the sportsbook provider. Casino sportsbetting section has their own independent risk assessment team, that I believe come from the provider themselves. They have independent power to flag players and void a bet or two, and the casino team will usually have to follow this ruling.
About unblocking... do you want to keep using rollbit, where you can only play casinos and the entire sportsbet section is restricted? If so, I'll try to reach razer again and see if he can arrange that; to grant you access to the rest of Rollbit's section, except the sportsbetting.