My edit and title links don't work for ANY single posts or ANY single pages or for the first post's title & edit listed in SOME categories or the first post's title & edit SOME archives.
All of my edit and title links work for my main home page that lists my latest posts.
This problem began when I changed my WordPress theme. If you can help me, please know I'm a novice at editing php files. I have done a lot of successful editing in the past to those files, but I need ALL of the steps when I do so.