Hi there and welcome
If it is not accepting your password, then you will need to reset the password.
To do this, you use my link below on the device you talking to me now on
Once reset, use this new password ***** your Kindle
If you have continued problems, or would like any additional information or assistance, please do not hesitate to let me know.
Else if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated.