I did a factory reset on my Pixel Watch yesterday, and had to reconnect to HA, this worked but it created a new device.
I wanted to remove the old one, but accidentally removed the new device, so then I removed them both.
Now I'm in some kind of limbo where I can't connect the watch again. When I try to do so, my watch asks for the server to connect to. When I select it, my phone opens the HA app, but it shows the screen to select favorites and create templates. It doesn't show the connection wizard.