- Make sure that your mobile device or computer is connected to the internet.
- Update your Kindle app.
- Make sure that your device meets the minimum requirements.
- Confirm that your purchase successfully completed and that there are no issues with your payment method by checking Your Orders.
- Deliver the book to your preferred device using Manage Your Content and Devices.
- Make sure that your app is registered to the correct Amazon account. If you have multiple accounts, your book may have been purchased from a different account.
- Deregister and register the app again.