Originally Posted by 9littlebees
Ah, so I need to obtain a book from the device / desktop application itself for it to be a true "kepub"? Will do a test with a free book and update that section.
A kepub is a "Kobo ePub". It is an epub with extra formatting made by Kobo. Purchased versions use DRM which is different to what ADE uses. The other thing is that they are synced to your devices and Kobo apps through the Kobo server. The current reading position is synced so that opening the book on each device will go to the same position.