I use ADE on my laptop and have zero issues reading library books, but after too much time spent trying to get those same borrowed library books into this app on my android phone, the customer support chat person on Adobe's site informed me that this app is obsolete (though they used few words so I can't be sure if that is just the android app or all mobile apps or what). When pressed for an alternative, they said I should use Acrobat Reader...which can't actually open the library-loaned files because of DRM. What is this app even still doing on here if it's obsolete and useless?! What a waste of time and space.