Hello, My name is ***** ***** I'll be assisting you. I'm sorry you're having problems.
The problem you're having is often due to the software in the Kindle locking up and it needing to be rebooted. To do this, simply press and hold the power button on the Kindle for 40 FULL seconds, then release and wait a full minute for it to reboot (do no press anything else within that minute). If this does not cure the issue, try that reset up to THREE TIMES and wait the full minute to see if it reboots.
If you're still running into problems, then try plugging the Kindle into the charger for 15 minutes, then eject it and try the reboot a couple of more times.
That "should" take care of the frozen Kindle. Then to make sure the payment info is updated correctly:
To change any CC information, you need to update your Amazon "One Click Payments" credit or debit card info from a PC (not from the Kindle directly) at the link below:
If the device still does not work beyond that, then please reply back with the Model of the Kindle and also the AGE of the unit- and we can proceed. If you need further assistance let me know. Before you go, PLEASE DO click at least a 3 STAR RATING, at the top of your screen. That is how I am credited for my efforts by the site. You can follow up any time as needed at no additional cost.
Do you need further assistance with this?