Shelly Plus i4 DC disconnecting and forgetting to reconnect !

[Xypolv]

Hi,

I have 2 Shelly Plus i4 DC.

Last spring one started to go missing, unconnected. Unpowering and repowering it back did not make it reconnect to wifi/app.

I had to do add a device and repair it to be back on. It did that a few times until a firmware update came available. I did upgrade both and I didn't have unconnection problem anymore.

Until last week. This time it is the other device, that had not the problem last spring but now is deconnecting and loosing information to reconnect itself. Both are at the latest firmware version that is not beta.

Any idea on how to debug this ? I just enable the daignostic report log and I am waiting for it to disconnect again. But will I see anything usefull since it won't record anymore the minute it goes away ?

A second question : I saw on this log that there is a lot of BLE activities. BLE that I don't use on that device. I tried many times to turn off/disable it but it keeps turning on after reboot. Why and what can I do to turn it off and that it stay off ?

Last question : I see that there is a temperature units setting. Is there a temperature sensor in that device and if yes, how to see that value ?

Many thanks for your time and knowledge.