Nous A1Z range problem?

Hi, I’ve got 1 Nous A1Z that only connects to the Zigbee network when Coordinator (Conbee II) is literal hanging on the Nous. Within 5cm or so. When I move it away from the Coordinator (approx. 2 meter) it loses the connection.
Why is this happening and how to solve? It’s brandnew (3 weeks old).

It’s antenna sounds broken or disconnected.