A user reports that the extension only displays the "login required" message even when the user is logged in.
I have high hopes for this add-on. However in the current version it only displays a "login" button redirecting me to the Wikipedia login page, whilst I am already logged-in on Wikipedia. Even a logout and then pressing this button doesn't makes this add-on recognizing that I am already logged-in.
https://addons.mozilla.org/en-US/firefox/addon/wikipedia-reading-lists/reviews/
We haven't seen this from the Chrome/FF version of the extension, so repro help is welcome.