Fixing HomeKit devices showing "No Response" in Home
I had several devices that had been working with HomeKit start showing No Response in the Home app. I believe this started happening after a power outage.
All the devices are from Meross, though I'm not sure this is necessarily relevant. However, not all of my Meross devices were showing No Response: I have a Meross smart lamp that was showing No Response, an outdoor smart dimmer that was showing No Response, and an outdoor smart plug that was showing No Response but in addition I have 2 indoor smart plugs (they are identical, purchased in a 2-pack I believe) and while one of them was showing No Reponse, the other was functioning properly with HomeKit and the Home app. All devices worked properly with the Meross app (except for the outdoor smart dimmer which I don't have added in the Meross app).
I tried powering the devices off, leaving them unpowered for in excess of 30 seconds, and then powering them back on. This did eliminate the issue for the outdoor smart plug, but not for the other devices (so I still had 3 devices showing No Response).
If you search you will find lots of people that tell you if you power the device off and back on and it still shows No Response you should remove it from Home and add it again and it always comes across as if this is no big deal which baffles me: do people not use scenes and automations? If you remove a device from Home and add it again, all the scenes and automations it was previously associated with must be reconfigured for the now "new device" and this can take a large amount of time if you have the device associated with numerous scenes and automations. So no, I'm not going to just remove the devices from home and add them back without exhausting every possible avenue.