Remote Access on Port 80

https is called ‘Secure Connections’ in Plex and is already integrated.

But for that, would I have to access it by app.plex.tv?

https://plex.gustavoluppi.com:32400/

So what?
Using the hosted version has also the advantage that it’s always a few software versions ahead.

https://plex.gustavoluppi.com:32400/

You can only do that if you get a fitting cryptographic certificate for your domain name. You need to study this page carefully: https://support.plex.tv/articles/200430283-network/

Understand.

Thank you.