Where is Jitsi-Meet after installation?

I have a working nginx webserver on Ubuntu Bionic 18.04 server LTS with functioning SSL via Certbot and LetsEncrypt.

When I installed jitsi-meet following the quick install instructions, everything appeared to install smoothly with no pauses for data entry.
I can see the files in various folders in /etc and /var. However, with a browser I can still see only my original mysite.org pages. How can I see jitsi-meet?

In case it is important the log files contain message like the following:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.ice4j.socket.jdk8.DelegatingServerSocketChannel (file:/usr/share/jicofo/lib/ice4j-3.0-10-g982e782.jar) to method sun.nio.ch.SelChImpl.translateInterestOps(int)
WARNING: Please consider reporting this to the maintainers of org.ice4j.socket.jdk8.DelegatingServerSocketChannel
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations

Jitsi meet is in usr/share/jitsi-meet …
If you have an other website on the same server you may have a conflict