There should almost be a pinned thread to warn others about Rollbit. They are as bad as 1xbet/1xbit. I’d compare the complaints against both these books and 1xbit may even be safer.
I am not trying to side with Rollbit or anything but compared to 1xbit, Rollbit's forum representative does address the issue/complaint that has been posted against them when they can and Rollbit actually tries to solve the issue if possible, 1xbit on the other hand just ignores and hopes the complainant gives up and stops bothering them.