Yes sir, I just recently did. Today in fact. It confused me greatly at first.
I was not able to get the software working when using different ports for local vs external. When I did the following, the web server worked fine:
It is also worth noting that I did not use Lets Encrypt, or the Browser setup. I used certs generated from GoDaddy and the cli-based setup. I also was setup in AWS and had to make sure that my /etc/hosts file had the “External URL” pointed to the localhost IP.
Not sure if that information will help you, but I hope it does. This is a pretty cool software once you figure out how to get it working.