I purchased books from Sony e-store and from kobo store. When I bought my Apple device, I downloaded the kobo app. About 30 books automatically transferred/downloaded to the Kobo app in my new Apple device but ten books did not. I downloaded the Adobe Digital Editions, registered and authorized the computer and migrated the books into it. Still I don't see the ten books in my Apple Kobo app.
The Kobo App was display only eBooks how has buy by Kobo.