Can't enter the ISPconfig panel through the domain name, only through IP

Hello, I'm new in SPconfig, recently install it in new VPS following this tutorial: https://www.howtoforge.com/perfect-server-debian-10-nginx-bind-dovecot-ispconfig-3.1/

The webserver is NGINX

It works fine, but I can see the login page only in the IP and port: ex: 111.222.333.444:8080 but no with the domain name: ex: domain.com:8080

The domain is pointed to the VPS troughth Cloudflare and it resolve fine without port (domain.com) but no with port 8080 (either the basic 80, domain.com:80)

In the "Server Config" of ISPconfig the hostname is the domain.com and I added a Website with te same domain (domain.com)

Anyone can help me whit this? please.

Thanks.