Hi please restart the Kindle by pressing and holding the power button for 30 seconds, then allow few minutes to reboot. Once comes back on may verify your wireless connection ;
To connect to Wi-Fi follow these simple steps:
Attachments are only available to registered users.
A list of networks will appear. You may have to wait a moment as your Kindle detects networks in range. If your network doesn't appear tap the box next to Wireless Networking off and on to refresh the list.
Tip: Tap the 123!? key to enter numbers or symbols. Tap the ABC key to return to the regular keyboard. Tap the Shift key (up arrow) for uppercase letters.
Once you are connected to a Wi-Fi network, Kindle Fire automatically connects to it again whenever that network is in range. If more than one previously used network is in range, your Kindle Fire automatically connects to the network that was most recently used.
If issue persist please call 1-866-749-7771 to speak to Amazon customer service.