Terminal rejecting password
I attempted to reset the backup frequency for Time Machine, and was informed that in order to proceed I needed to enter my password. I entered it (knowing that it would not register on the screen as I was typing it), hit the return key, and received the message "Sorry, try again." However, the password entered indeed is the password for my computer.
I am using a MacBook Pro running El Capitan 10.11.6.
MacBook Pro with Retina display, OS X El Capitan (10.11.6)