Title is pretty self explanatory, I've managed to flash a couple of these thermometers and I just setup a brand new Zigbee network with a new SLZB-06U. However, I can't seem to add the devices to the network. Sometimes I've seen negotiation start, but it always fails. Since I'm pretty new to this, I have no idea where the issue is (thermometer, coordinator, configuration, firmware...).
Running Home Assistant Container, 2026.3.1