Sometimes Kindle books in KF8 (azw3) format have placeholders for images with the actual images contained in a separate azw6 container file. As far as I know calibre does not handle that case.
If that is what is happening here you can use the "Download & transfer via USB" function of the Amazon website to download a copy of the book with images in place.
Last edited by jhowell; 06-11-2020 at 07:56 PM.
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