If you can take a minute and use the rating system to rate our session as 3 stars or higher and press Submit so I am credited with helping you.
Let's try a factory reset then:
After you reset your Kindle, register it back to your Amazon account and all of your books, etc will download again.
Did you follow my steps?
Did the factory reset restore properly?
Please be sure to describe new issues when they occur -- I cannot see your Kindle screen.
Did you connect your Kindle to Wi-Fi?
What is the exact error message that you see on your Kindle?
I will send a refund request to customer service. Please do not reply back anymore.