Try these steps please.
On your Kindle>
1. Tap the Quick Settings symbol in the top right hand corner of the Home screen.2. Select Wi-Fi from the menu.3. Ensure Wireless Networking switch is in the on position.A list of networks will appear. You may have to wait a moment as your Kindledetects networks in range. If your network doesn't appear tap the tick box next toWireless Networking off and on to refresh the list.4. Tap the name of each of the wifi networks one at a time. On the screen prompting you to
enter a password, select Forget.
Then on your Kindle>
>press and hold the power button for 20 seconds and then release. Then when the kindle powers back on>
Let me know if this does not work and we can try another solution.
Please reply and let me know if you need any other assistance or if everything is good, take a moment to rate my service by choosing one of the stars at the top, then click submit.
Thank you very much!