Stelpro Orleans convector's integration with maestro controller

Hi everyone,

I just bought a bunch of maestro thermostat, the maestro controller and one orleans convector with the integrated thermostat.

I was able to pair all of the maestro thermostat with the maestro controller, but I’m not able to do so with the orleans convector. Stelpro’s website states that it should be working as they are both working on the Zigbee protocol. When I try to connect them, the Orleans shows that it is connected, but I’m not able to see it in the apps or directly on the controller.

Anyone ever experienced that issue.