Pointless zigbee hub in eero 6

I've recently purchased the eero 6 system and one of the benefits was the built in zigbee hub. It appears though, it is useless. I cannot get any zigbee device to connect to it. In the eero app it tells you to open the alexa app and follow the instructions to setup a zigbee device. There are no instructions!!
 

I can get the alexa app to find a zigbee switch put it calls it a plug and says 'server is unresponsive' and will not work. 
 

Does anyone else use the eero as a zigbee hub and if so, what smart devices have you managed to get to work? I'm installing no neutral lightswitches( and no capacitor preferably). 

Thank you.