No home found on Apple Watch

I reset my Home network a month or so ago after issues, every device now works as expected except my Apple Watch Series 3. I’ve erased all content and settings, set up as a new watch, yet still get the message No Home Found when I open the Home app on the watch. I can’t even ask Siri on the Watch to turn devices on or off because it looks at the Watch Home app and not my phone.

I do not know any reset my whole Home again, especially when all other devices are working—including my partner’s Apple Watch

The phone that’s paired has been restored as new during this issue happening—when I reset my whole Home. I shouldn’t have to do it again. It’s also frustrating that the response to fixing so many little issues is Erase All Content. There should be better error correction and problem solving built in to these systems.

My experience with HomeKit has been more issues as time has gone on even though the devices have not changed.