My kindle fire is connected to the wifi but will not download books or apps. help
please check it is connected to the internet.
Go to wifi and forget the current connection. Sign into the wifi again.
extra info. What Kindle? What ISP/router? Do you leave your Kindle connected to wifi? Have you signed ito the correct Amazon account - you may have created a second account?
try a reboot by holding the power button in for a full 40 seconds
and the forum moderators might move this to the Fire forum