Lost Prior Purchases
The "top-to-bottom" update, mentioned in the version history, of this app was a completely new app. If you have purchased anything from the old app (the book with headphones) they will not transfer to this app (the book with play button). Thus, you may be required to purchase them again. Im currently working with the company to get these purchases transferred to this newer app with the same name.
Awallz 101 about
Audiobooks, v7.0.1