Ok, its starting to look as if nothing I can write here is going to convince you. Is there any objective way you could determine  and I are not the same person? If so please tell me and I'll do it. Maybe ask the opinion of some other administrators? Maybe ask us questions at the same time? I don't know. At this point we're both pretty much depending solely on your writing forensics skills and I don't think it's fair. I can't vouch for that user not being Alex7898 but I can vouch for me not being that user (or Alex7898 or any other for that matter) Could you at least comment further on your analysis of 's and my style of writing and what in particular you see as similar? If that's your only evidence to maintain this block and to assert we are both the same person then maybe explain it in full so we can defend ourselves against something more specific.