So, I may have some help for those missing book covers (books purchased from Amazon). I recently got a Kindle Oasis 32gb and have had quite the time trying to load my large library onto it. So I thought I would share...
I too was experiencing missing book covers (thumbnails) on downloaded books and tried a bunch of different things including:
- toggling back and forth between All and Downloaded
- restarting the kindle
- toggling back and forth between List and Grid views
- deregistering the device and registering again
- deleting the book off the kindle and adding again
None of these worked all of the time. What I have noticed goes back to another users post on this site regarding loading large libraries onto the kindle:
https://www.mobileread.com/forums/sh...d.php?t=291838
In this user's post, they mention how to check if the Kindle is actively indexing your books and/or if the indexing is stuck. Check out this post for steps on how to check if the kindle is actively indexing. I found that if there are more than approx 40-45 titles listed as 'books to be indexed' that the kindle covers will not show up when you are scrolling through the 'ALL' section / downloading books.
I bought the Oasis 32gb to accommodate my large library, and it is very unfortunate that you really can't download large libraries in one swoop (especially if you want the thumbnail covers). As a reference, I have approximately 3500 books in my library. It really is just a download part of your library and wait game....
Hope this helps!