Someone posted a link to this book on the forums:
https://www.logos.com/product/600/the-prophecy-knowledge-handbook
I first checked to see if I had it in Logos by typing prophecy knowledge handbook into my Library. Nothing found. So I thought I might want to buy it, clicked on the above link, and was taken to the page which said I already had it:

"Hmm..." methinks. So I try to open it by clicking on the "Open in Logos" button.
It opens in the web app, which tells me that it needs to be opened within the application.

So I click "Open link".
It opens up a tab in Logos which says "You don't have a license to view this resource."

That is false. I do have a license. If I click the "Visit Logos.com" link, it takes me to the page that shows that I already own the book. Head-scratching moment here.
Since I happen to know about hidden books, it finally occurs to me to check my list of hidden books in Program Settings, and sure enough, it is listed there. I must have hidden it at some point in an overzealous effort to hide what I thought were useless resources.
But what about the poor user who has never heard of hidden books? This experience would be VERY puzzling to them. It seems quite contradictory to show them owning the book on the website but then to say "You don't have a license to view this resource."
Instead you should say "You own this resource but it is currently hidden. Would you like to unhide it?"
Be like Clippy. Be helpful. 

I've also put this suggestion on FeedBear and would kindly request that you vote for it:
https://feedback.faithlife.com/boards/logos-desktop-app/posts/give-user-helpful-information-if-they-try-to-open-a-hidden-book