Libby is a reading app created by OverDrive. You can transfer your Libby content to your Kobo eReader using Adobe Digital editions.
For details on how to transfer your Libby content to your Kobo eReader, follow the steps in Libby app's support site.
Note: The Libby app is not created or supported by Rakuten Kobo. If you have questions about the Libby app, please contact Libby's customer support.
Most Kobo eReaders support the built-in OverDrive feature that lets you borrow content on your Kobo eReader. Read about using OverDrive on your Kobo eReader.