Ok. I have an account now. Here are some of the specifics of the problem.
I have and Abode home security system. It establishes a geofence around my house that keeps track of the coming and going of phones (and their owners). I have a Pixel 2XL which is always recognized when it leaves and when I arrive. Previously, my wife had a Galaxy S9 which worked fine reporting to security system. Last month, my wife upgraded to a new Galaxy S10. I followed Abode guidance about removing her old phone, and sending her email a new invite to join the phone to the security system which she accepted. So when I log into the security system, it sees both phones but says that only my phone (Pixel 2XL) is reporting.