SOLVED - My solution was to create a new account with a different email address.

I emailed Logitech support, but what they told me didn't help. First response ignored my question, second response was specific (install software again) but still didn't avoid the system trying to setup a 650. So I installed software again, and set up a new account which required a different email address. Not ideal, but was able to get the system to recognize my One and setup.