Cannot open jitsi meet with public ip address

I install jitsi meet from

https://github.com/jitsi/jitsi-meet/blob/master/doc/quick-install.md

and I setup domain with ip address 172.xx everything in local network is working fine.

when I setup behind nat.

org.ice4j.ice.harvest.NAT_HARVESTER_LOCAL_ADDRESS=172.xxx
org.ice4j.ice.harvest.NAT_HARVESTER_PUBLIC_ADDRESS=193.xx

I cannot access webpage of jitsimeet by https://193.xxx but the local network is working fine yet.

I config NAT and forward Public IP 193.xx to 172.xx by Firewall in office.

What I missing config or setup for server please suggest for me. Thank you.