Remote access

[carlospj]

With your local IP in Cloudflare, remote access will definitely never work.

Yeah, sorry, I meant to say PUBLIC IP instead of LOCAL. My mistake.
So, to recap, having the Public IP and NAT Loopback, what I need is proper port forwarding. What I meant to say earlier was that I had at some point the Public IP in Cloulflare, the NAT Loopback and the ports open, but I didn't have local or remote connection. So I probably screwed up the port configuration.

To add more information before moving on to the port forwarding configuration, in the WAN section there is a table called GPON Connection Table. In it you can see an entry that is Internet with its IP (my Public IP) and another entry that says Voip_ip_interface, which I think is the router, with another different IP.
If I edit the Internet entry, I have seen these NAT options:
   
Is this correct?

Can you share screenshots of your port forwarding config?

   
In that screenshot they are not active.

One column's missing in the above screenshot:
   
In this column, in both rows, it is put the server's Local IP.

When you add new rules, there is other option that doesn't show up in the above table, which is Protocol. In that option I set in both TCP/UDP.

That is my full port forwarding configuration. Do you see something off?

But, as I stated, custom DNS entries are the way to go.  If that is even an option.  On all the routers I've used, in the DNS config section of the router there was a "edit hosts" button or table where I could add DNS entries to.

I have gone into all the router options and the only one that says something unique to DNS and that you can add entries is this option:
   
Is this what you mean? If so, what exactly do I have to put in each column?

I can show you other section's options, in case I'm missing something by the name.
NAT Options:
   

LAN Options:
   

Hope all this could help!