Please contact OverDrive support and report an issue with “Account – Card Update.” Provide your email and current library card number (and your old library card number if you have it.) You can expect a response within 24 hours after submitting your request to OverDrive.
Restart your device. If this does not work, you may need to uninstall then reinstall OverDrive/Libby mobile app. For more tech support contact OverDrive directly.