SSl fail in a new self hosting server

I installed a new self hosted Jitsi meet on a local lan pc(behind a nat router).
This time Jitsi works but the ssl fails though I passed the standard installation.
Is there some log file or some other way to debug it?
Thx
I. Lesher

What kind of failure are you seeing? What error message did you get?

Thx
There is no error and the functionality seems to be ok but the URL shows that SSL is not supported.
Please look at the attached image.
image.png

Any idea?
Thx
I. Lesher

Because you don’t have a trusted TLS certificate. You have a self-signed certificate.

Have you executed the let’s install script?

Yes I did. So maybe I missed something along the way…
Do you recommend to try to do it again?
Thx
I. Lesher

Try again and check the output.

I tried again running the following command:
sudo /usr/share/jitsi-meet/scripts/install-letsencrypt-cert.sh
I got a normal respond as the following but the problem persists.
Ant other idea?
I. Lesher

Congratulations! Your certificate and chain have been saved at:
/etc/letsencrypt/live/co2.triplebit.com/fullchain.pem
Your key file has been saved at:
/etc/letsencrypt/live/co2.triplebit.com/privkey.pem
Your cert will expire on 2022-11-02. To obtain a new or tweaked
version of this certificate in the future, simply run certbot
again. To non-interactively renew all of your certificates, run
“certbot renew”

Configuring nginx

Do you access your Jitsi using the same FQDN which is set for Lets Encrypt?