When Apple forced a password reset over the weekend the process was smooth across my devices. However HomeKit on my AppleWatch stopped working - all devices unavailable. I tried rebooting the watch and my iPhone to no avail. Then I erased and re-paired the Watch also to no avail.
After sleeping on it I thought to reboot the HomeKit hub and voila the watch worked right away.
What I learned from this? I rely a LOT on controlling things using my watch. I would not willingly give that up. ⌚️