I bought 5 credits upon downloading the app and it took over a week. A glitch I was promised by the Disney service team, and if I had complaints, I was told to take it up with iTunes. Now, I try to sync my books across devices and I lose the books. There are better options out there until Disney gets their act together. Furthermore, I couldnt sync across family devices (e.g. my wifes and my own even though we have family sharing.) I think this is due to how Disney saves books in the cloud drive, but nonetheless, it seems like a critical missed feature.