I suspect that it's that copy/paste response to myself in order to make accessible a response that got hidden when I got blocked by that Marcus fellow under Graham Pemberton's article few days ago, which you saw and replied to. However, I'm not totally certain as the mail I got from Medium didn't specify which response, only that I have duplicate content and/or are spreading links in spam like fashion (and have 12 hours to delete it). In any case, I don't intend to delete that particular response, and if it's something else, then it's plainly ridiculous and not worth my energy to investigate which of the 1.5K responses they mean and what exactly they consider as breaking the rules.