4 item switches don't work seperately. Wrong Item/Thing configuration

In case it helps, we also have a tutorial here in the openHAB community.

I ran Tuya-convert on my RPi using a spare SD card with a fresh Raspbian install. Later on, I put that image on a second RPi to run Pi-Hole and CUPS, so now I have it available any time I need to flash a new Tuya device.