I also got them and can confirm they don't work with tuya-convert when using the software out of the box.Did you do a firmware upgrade of the pre-installed software before trying tuya-convert ?
So far I've found:
- They can be added to HA with the default software but you can only do on/off in HA. There is no power consumption info. It looks like there might be another integration which can be used but will have to spend a bit of time getting that connected up.
- With the default software it doesn't seem like you can set the default power state. So if it was on and you have a power failure, it won't come back on until you switch it on again.