A lot of people are banned and a lot of people message theymos. There is a huge backlog.
Thanks all for your help, most likely this was the reason for ban. But I see no reason for a permanent ban, there must be a way to restore the profile.
Plagiarism = perm ban. There has only been one instance of which the ban has been lifted and you do not have the same kind of reputation. You shouldn't need a warning to know not to plagiarize.