I bought VALLHORN sensor from IKEA but unfortunately cant add it to my zigbee gateway below mentioned model numbers:
1- Z10-C46-LX we are using 4 inch screen Tuya zigbee gateway to add these devices to our zigbee network with no luck yet.
2- YD-WG-ZGB this is our another Tuya zigbee gateway we tried both of these gateway but we cant pair sensors.
I don’t think IKEA Zigbee devices work with Tuya gateways. Use a dongle and ZHA or Zigbee2MQTT instead.