Tuya Thermostat no showing in ST

I have two Tuya WiFi thermostats showing in ST
I have now added two Tuya Zigbee themostats to Smart Life
In ST I smart life integration but only one of the new thermostats show as devices.

Anyone any idea what may be the problem and why one of the new devices is not showing?

Make sure that the server you have your tuya devices register and the tuya server accessed by Smartthings are the same