Usually a ban comes from a copy and pasting post / plagiarism. Probably there is post you made that was being copied but could.not traced now in your profile messages probably it was being deleted by MODs. As we all know that many of the MODS are active deleting post individually or even a thread to which it will going to include the deletion of all post or replies on that thread. Just wait for any admin to came in and reply you. This is.the best section suited for any complain, issues regarding with BCT accounts.