Unable to add bookmarks/notebooks

For some reason, I've discovered recently that the Windows app is not allowing me to add bookmarks or put items such as Ensign articles in notebooks. This occurs even immediately after rebooting the computer (HP laptop, about 3 months old, Win11).

The problem also exists on the website version of Gospel Library (and yes, I made sure I was signed in on both platforms).

I’m having the same problem on my iPad app. I get the error message “this content is not formatted to allow bookmarking”, when I try to update a previous bookmark to my new place. What changed?