Q. What's with the sign up or sign in step in the OverDrive app?
When I install the OverDrive app, it prompts me to sign in (or sign up) using a library card or a free OverDrive account. What do I do?
You will be using two accounts for downloadables: an OverDrive account to authorize the app, and your library account to check out titles. Here's OverDrive's explanation of the OverDrive account.
When you first launch the OverDrive app after installing it, you get two choices for authorizing the app with an OverDrive account: library card number, or an email address and password. We recommend the email address and password option.
Some app errors might be resolved by deleting and re-installing the app, in which case you will authorize the app again by signing in. You should use the same method—such as email address and password—that you used previously, if you want to be able to download books that were already checked out to you and downloaded before you deleted the app.