You can easily fix this issue by following these steps:

1. Restart the Kindle Device - Universal and the first thing to do whenever kindle face any problem be it kindle fire won’t charge or kindle can’t connect to Wi-Fi, simply restart your Kindle.

2. Restart your router - If the problem persists, next you can try to restart your router. If possible change DHCP IP to a static IP address when you restart your router.

3. Walk nearby your router -If you are sitting far away from your router the, chances is you are in the weak signal zone or dead zone.

4. Choose Channel 1-11 -Ensure your wireless router setting for channels preferences are set to use Wi-Fi channel from 1 to 11. For more help on your wireless router settings, you need to approach your ISP or the router manufacturer.

5. Restore Factory Settings - It is more of a technical solution that could fix countless issues in mobiles and tablets. Restoring your device to factory reset enables many users to connect to the Wi-Fi network successfully.

I hope these steps will help you. If still you face any error then you can read this guide on '''kindle won't connect to wifi'''.

For further any help contact Kindle help guides.