A fix is in the works, but in the meantime, the immediate remedy is re-authorize the app with the same Adobe ID you used before. If that doesn’t work, the next step is to uninstall and re-install the Overdrive Media Console app, which will also require you to re-authorize with Adobe. IMPORTANT NOTE: A re-install will clear the bookshelf, history, and app settings from the app.
Your Bookshelf of checked-out eBooks will still be available from your OverDrive account so you can re-download any titles you still have checked out.
Refer to the iOS section of this Help article for assistance.
Any news about updates will be posted here.