When something like that happens, it is most of the times due to shitposting and/or copy pasting. I suppose some moderator will reply to you but I would start thinking of doing things correctly.
What is not clear to me from what you say is wether that is a temporary ban or a nuke.
as to me everything was done correctly. They wrote their original posts. If it is possible to indicate the cause of the error, then everything became clear.