I have IOS 10.3.3 on my iPad and it says it's up to date.
I also received the "no content" message with full internet running on the rest of my iPad and its apps.
So I reinstalled the Gospel Library app and it opens okay - without any of my highlights, notes, tags, and links!
I checked on the website, and they are still there in study tools (the notes and tags are, anyway), but they do not show in the Gospel Library app on my iPad or my iPhone (which is running IOS 12.1 - I have postponed the latest update to avoid update bugs).
How do I get my Gospel Library apps to show my highlights, notes, tags, and links again?