Libby doesn't require authorization, so you won't run into this problem there, and your current OverDrive loans will be waiting for you in Libby when you sign in with your library card. Once you tap it, another actions menu will appear allowing you to send the link to other apps or to open the file in a different app. From the actions menu, choose the ‘Send link’ option. Once I check out the book, I select the EPUB format and the web browser (Firefox several recent versions over the past year, running under Windows 10) downloads the ACSM file. Note: You may also want to consider trying the Libby app to enjoy digital titles from your library. On your iPhone (or iPad), open the Dropbox app and tap the little arrow next to the ePub file. Ive been using the Libby app to download library books in EPUB format for over a year, with no problems. If you see a 'Device Limit' error, you'll have to unlink a device from your OverDrive account.No to manually authorize with an Adobe ID instead.Yes to automatically use the same account you signed in with (most likely your OverDrive account).Tap the icon in the top-left corner to open the Home menu.You'll see this error when you try to download an ebook on your iOS device (iPhone/iPad/iPod touch), but your device isn't authorized to read ebooks.

After the EPUB has been downloaded, you will now see an Open in link.

Here's the full error text: Device Deauthorized: This device is not authorized to read eBooks. At the bottom of the screen, you will now see a blue Download link. 'Device Deauthorized' error in OverDrive for iOS

How to read epub on iphone