This device uses firmware 56 and it’s not functioning as 4 independent switches. I have a same 4 channel switch with firmware 50 and that’s working fine. both are using the same quirk
It would seem the new firmware needs a different quirk.
Tuya is almost always non-standard and doesn’t care… Don’t buy it.
unfortunatelly there is no low voltage 4 channel alternative
If you are using ZHA, the first thing to try is to install ZHA Toolkit and use it to run the tuya magic command on the device.
So i lounched tuya magic on this 4channel switch, i dont know what happened but its working properly now.