Hi there and welcome
When you say its not operating, what exactly is it not doing?
And which model Kindle is this?
This is usually an issue with the Firmware, so I would first like you to do this please.
Remove the charger from the Kindle and hold the power button to off for 35 seconds.
Release, then connect the charger and try to turn on the Kindle and try to use it.
Let me know the results please
Its the button you use to turn the screen off and on.
No, the payment failed for the phone call, so I did not call.
I have given the info for you to do please.
The power button is the button you use to turn the screen on and off.