I tried so hard to like these Wemo plugs - the form factor is great and the cost is reasonable. Today I am officially giving up on them. I have 8 of them and they have been the most unreliable and frustrating item in my Apple smart home. They constantly go "No Response" and I have to cycle their power (unplug them)
to get them back online. Of the 8, I'd say I average at least two per day going "No Response".
I am about to just throw them in the trash bin and move on - they have been way too much frustration for the few bucks I saved over buying from a more reliable brand. I have replaced all of them over the last few months with plugs from another company (starts with E), and they are rock solid and never drop off line, so I know it's nothing to do with my Thread network capabilities ( I have 4 HomePod minis and two Apple TVs available as thread hubs).
I worked with Wemo tech support for over two months troubleshooting them. I spent hours and hours of my time doing all of the test they wanted. We tried everything to get them to be reliable and tech support finally gave up and said that Customer Service would contact me within one to two business days to arrange a refund for the plugs since we could not make them work. That was over 1 month ago and after several reminder emails on my part I have still not heard anything from them.
If anyone from Wemo tech support or customer service wants to look into this, the reference for all of my work with your tech support is ref:_00D306e4T._5002T1QkCCo:ref .