XAMPP remote access on windows server

I am running a website in XAMPP on localhost in Windows Server 2016. I am trying to make it public so anyone can access it via the IP (and later the domain).

So I checked that the server port 80 (TCP) is open in the firewall settings. But portqry.exe returns:

TCP port 80 (http service): FILTERED
portqry.exe -n xxx.xxx.xxx.xxx -e 80 -p TCP exits with return code 0x00000002.

I did what I found in other similar questions: stackoverflow xampp to public

I restarted apache but I still can't access the website remotely.

Obviously, I am missing something because I have no previous experience or knowledge on this matter. What else can I try?