Hi Oriceon
Further to pfg if you are using non standard ports there are several other approaches you can also use
A) Allow Port Translation Temporarily on your firewall that is to say that if I come in on port 80 the firewall will connect to the web server on your non standard port
B) Redirect port 80 to non standard port on web server side
C) If the site is not in production point it to a temporary web server (look at certbot documents on how to do this) to serve up content
D) PFG is correct if your web server is too hard to configure and you have access to DNS records it’s a lot easier to update those (add a TXT entry and you are done).