New user here. Same problem. I have read multiple help threads that state when one edits a page or post, a section with title, permalink and edit button appear at the top of the editable page, but I don’t see that. Perhaps that functionality was present in an earlier WP version? I just see the editable text of the post or page itself. I can select “Quick Edit” via “Pages – All Pages” and change the slug, but this seems to have no effect on the permalink of the page or post. I have a new site (0islessthan1.com) and am just learning. I don’t need to worry about prior traffic (I have virtually none).