Terrible App Do Not Download

I would give this 0 stars but I cant. This app is really slow. Im a middle school student and our Librarian wanted us to download it but when I go to open a book to read it after ice checked it out, it logs me out of my account and says session invalid too long or logged in in another device. Its not my Internet so its the app and even at that I dont have it on any other devices and had been in the app all of 30 seconds! Hope it gets improved and this gets fixed.

Rmarasco about Destiny Discover