Just received my beautiful A6X today and loaded books through Calibre - but several book covers are missing. Is there something I can do to fix this or is it a bug?
Fix edit ebook error epub error mobi error and all ebook formatting by Colharis | Fiverr
How to Fix EPUB Files
How do I use epub-fix? - MobileRead Forums
How to Fix EPUB Files
The Fix eBook by David Baldacci - EPUB | Rakuten Kobo United States
GitHub - innocenat/kindle-epub-fix: A simple Javascript website to fix common EPUB problem for Amazon's Send to Kindle.