Regarding the H1 tag, all profile pages, including: info, Friends, Posts and so on, have the same H1 header. It seems to me that the H1 header should be left only on the main profile page, and on all others, only the title without the H1 header should be left. Or add, for example, not just “Ivan Mishchenko”, but “Ivan Mishchenko - info”, “Ivan Mishchenko - Friends” and so on. On these pages the title is correct, but the H1 header is the same on all of them.