My name is***** am sorry to hear that you are having this issue.
I will be glad to assist you with this.
To reset your Parental Controls password:
did that work for you?
You can go onto your amazon account at Amazon.com and select "manage your device" and then select deregister for that Kindle. That resets the parental control password. Go to the device and hit resync. When thats done go into the settings gear, my account, and register it using your amazon account info. It will be as before, nothing lost.