pfsense and mi gateway

[techy82]

I am running the latest version of pfsense, with pfblockerNG, using the dns resolver

I have several yeelights, MI gateway and some zigbee switches

it was working fine but has recently stopped, I have checked the firewall logs and the MI gateway is connecting to the outside world fine, however the switch no longer activates the yeelight

any ideas where I can check on PFSense to see if something is blocking the gateways connection to the lights locally?

thanks very much