Recent changes have made this app dysfunctional. It closes when you click to open, no longer shows daily deal or allows access to store. If I want to find a book easily or buy sale items I have to use Firefox. I see from April it will not permit credit card purchases - why??? I have 400+ audiobooks but if there was an alternative I would switch service. Have used this app for years & this is the worst it has ever been - why has a good app been made so utterly unusable?