
Verify device date and time are accurate. Ensure you have free storage and remove large downloads if nearly full. Toggle Airplane mode on then off and then use the app sync or refresh action. Sign out of the library app and your device account, restart, then sign back in. Remove and re add your library card or library account in the app, then refresh Loans. Borrow a different title to test; if that works, return and re borrow the problem book. Turn off VPN or private DNS if enabled and test on a different Wi Fi or a phone hotspot. In app settings clear cache or storage, then open the app and sync again. If the app uses DRM reauthorize your ID by deauthorizing then authorizing again. Update device software and the app, reboot, then sync. Check profile filters such as Kids or maturity settings and disable them temporarily. Deregister the device from your account, then register it again and sync. Confirm the checkout shows on your library web account; if missing redo the checkout. If still failing download the book on a phone with the same account; if it works there but not on the e reader the device setup is at fault; if it fails on both the library service or your account is the cause and you should contact your library.
Two quick extras to try: make sure your library card is still active and that you haven’t hit the app’s device limit; if you have remove an old device from your account and try again. Forget and re-add your Wi-Fi network, then leave the reader plugged in and awake for a few minutes while syncing, since low battery or sleep can interrupt downloads and also, occasional service outages happen; if the checkout shows on your account but won’t download, waiting a few hours often clears it.