Jitsi-meet “ERR_CONNECTION_TIMED_OUT”

What happen

I use azure vm ubuntu22 LTS.
I watched this web site to install jitsi-meet on server.
https://docs.keepittechie.com/tutorials/jitsi-meet-install-ubuntu-server-22.04/
I tried to connect jitsi-meet. But Chrome Error “ERR_CONNECTION_TIMED_OUT” was displayed.

What we tried

I tried deleted vm or change the host name.
Also, I watched this web site to repair.
https://community.jitsi.org/t/how-to-configure-client-timeout-in-cases-of-network-disconnection/112623

Is the DNS record configured properly?

Thank you! I’ll try it>

Try in incognito window.
I think may be related to ssl

I tried in incognito window. But It didn’t succeed.