My EPUB book is blank on iBooks and any IOS device

[Joanna-Varró]

Hello,

I would like to kindly ask for help.

I am using InDesign CC and I have exported a very simple book (text only) to ePub format.

It was accepted on Kindle and it works on all EPUB readers.

But when I open it in IOS the book has only white pages (and like one million pages) and no book cover.

Any help will be appreciated.

Thank you,

Joana