Symptoms
- Purchased book doesn't appear in the library
- Book shows in library but won't open
- Downloaded book shows an error message
Likely causes
- CommonDevice not synced with your account recentlyNew purchases need a sync, which usually requires Wi-Fi to be on.
- CommonIncompatible file formatSideloaded files in the wrong format for your device won't open properly.
- PossibleCorrupted downloadAn interrupted download can leave a partial, unreadable file.
- PossibleStorage fullA full device can silently fail to download or open new content.
- Less commonDRM or account mismatchA book purchased or downloaded on a different account may not open on this device.
What to do
- Turn on Wi-Fi and manually trigger a sync from the device's menu.
- Check available storage and delete unused books if it's nearly full.
- Confirm the book was purchased or downloaded with the same account as the device.
- Delete the problem book and re-download it from your library.
- Check the file format is supported by your device if it was sideloaded.
- Restart the device after syncing to refresh the library view.
- Contact the bookstore or manufacturer's support if a purchased book still won't appear.
When to call a pro
This is a software and account issue, not a hardware one, so ongoing problems should go to the retailer's or manufacturer's customer support.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.