Whether you use the app or are on a computer please be aware of the difference between the play/open and checkout buttons.
Play - opens the audiobook and allows you to listen to it
Open - opens the ebook and allows you to read it
PLEASE NOTE - if you only play or open the digital title then leave the system you may no longer have access if someone comes and checks out the title.
Checkout - when you checkout a title you have access to it for three weeks unless you choose to return it earlier.