Mysa thermostat showed up in integrations, then was gone

I am a VERY noob, so please forgive me if I’m missing something obvious.

A few weeks ago, I set up a VM on a Windows system to start playing. My Mysa thermostat showed up in the discovered integrations by default.

Yesterday, I shut that down and started over with a Raspberry Pi 4 build that I just downloaded. Mysa did not show up in that Integrations (Devices & Services) list. And, I can’t add it.

I’m a crazy? Is something out of date on the Raspberry Pi build?

(I switched to Raspberry Pi so that I can use a Nooelec USB radio receiver to get data from my AcuRite weather station.)