@xnau I had the same issue, which was easily remedied in Settings (as per your suggestion).
However, I would kindly suggest that “Marking Required Fields” is checked by DEFAULT as this is the commonly understood use of it.
Thanks and appreciate your app.
wanted to say that I have the same problem. the “insert link” does not work, very quirky, takes lot of tries & combinations to get it to insert a link. As others have described!!!
Hope WP can figure this out!