Cannot add new Edge 840 or connect to old Forerunner 745

Hi there,

I own a Forerunner 745 that I used to be able to connect to Garmin Express on my Mac.  I just bought a new Edge 840 and tried to add it to my Garmin Express on my Mac but to my big surprise, Express could not find it. I decided to connect my 745 since, express already had it associated but that couldn't connect either.  I wonder if some update to MacOS broke compatibiity.

I am on MacOS Sequoia 15.3.1 and running Garmin Express 7.24.0.0

Any ideas or help?