Webrtc failing on Edge through PF sense

[steve from accounting]

Have pfsense community edition firewall and trying to connect to a pexip mcu via Edge browser 41.16299.15.0. I've tried doing this with an allow all both inbound and outbound but browser always fails on the pfsense firewall. Using any separate network works without issue. Can someone give me advice on something I might be missing or where I should start in narrowing this possible cause?