Because you wrote that you had no problems with other Zigbee devices, I guess it may be a problem with the app. That’s why I referred to the Lixee app topic.
However, I don’t know the Lixee app, I don’t have any Lixee devices and I don’t speak French.
You have also already done a lot to solve this problem, which is very rare, by the way. I guess the Lixee power meter isn’t a battery device, right?
You can also try out the following things:
– PTP
– Install the test version of the app
