We've created this Forum Thread with some workarounds and advice to assist you in publishing you ebook.
I can not upload the .epub preview of my ebook
Good evening everybody.
When I try to upload the 35kb .epub preview of my ebook (created with Calibre), after the uploading bar is full/process is done, the page refreshes and gets blank, and, if I check the ebook page, the preview has not been created.
I have tried with a .docx preview, it uploads, but when I open it, it is unreadable.
I went with a .doc, and it works, but I would prefer to have an .epub preview.