Hi there and welcome
As the first step, can you remove the Keyboard under Bluetooth on the iPad.
Then on the iPad hold the power and home button for about 10 seconds until you see the Apple Logo, then release.
Let the iPad restart, then join it again with the Keyboard and tell me if it then functions correctly please.
Where you able to do my last instructions?
It is the internal mainboard in the Kindlle that has faulted. Its a hardware fault in the Keyboard
I am really sorry about this and you are going to have to return the Keyboard to have it replaced. It will be covered by the warranty if this has not expired, and the replacement will be done at no cost to you.
I am really sorry about this, and if you have problems, or would like any additional information or assistance, please do not hesitate to let me know.
And if you can take a second to rate my service, that would be greatly appreciated.
You return it to the place of purchase, so where you bought it from, they will handle the replacement for you (they replace the entire unit).
If your not sure how, tell me who you purchased it from please.
Your most welcome, you can contact them for a replacement if its from them,
if you would like any additional information or assistance, please do not hesitate to let me know.