Hi,

To read your downloaded eBook, you can use various eBook reader apps or software depending on the file format of the eBook (e.g., PDF, ePub, MOBI, etc.) Based on your device you find options below

For windows/PC:

Adobe Acrobat Reader

Calibre

FBReader

For smartphone/tablet:

Google Play Books

Moon+ Reader

FBReader

try these app options to read your ebook .if you find any issue fell free to ask a question we are glad to answer