Hi,
Thanks for reaching out. Support unrestricted my account yesterday so everything is fine now, but they couldnt tell me why it was restricted the first place so im a bit afraid now and dont know if i should stop betting on rollbit or not.
Temporarily freezing withdrawal can be for several reason, but for this one it's quite likely, IMO, that your betting history were under review by the betting provider to check for any abuse or something else. If this is the case, there's nothing Rollbit can do but to wait for the conducted analysis to be completed [by the game provider, not by Rollbit] and when they give a go, your fund got processed.
As this matter is solved, you might want to lock this thread and marked it as solved by editing the thread title and add the "solved" word. The button to lock a thread is at the bottom left of the page.