@Malaga82 It looks like you probably have a device with the newer firmware. These require some updated code over that with @Micke_Hedqvist suggested. You also need to provide the key with these newer devices, otherwise they will just close the connection and not report any data. I’ll be posting a walkthrough and call for testers for my new python package that can handle both new and old devices, and then reports the stats via MQTT.
Here’s the link to the walkthrough for bookmarking. I’ll have the details filled in the next 24hrs, but feel free to take a look at the beginnings of a guide: https://community.home-assistant.io/t/tuya-switches-w-power-usage-data-no-tuyaconvert-needed