@YoVissy 

Hi,

So, you are running a game hosting server on a Windows PC that is connected to the LAN of your Archer BE550. Is that correct?

Is 80.220.229.228 the "Internet IP Address" of your Archer BE550 or do you have another NAT router connected before the BE550?
 

  @woozle 

That is correct. I have used "Adress Reservation" and Port Forwarding. IP is always same for that Windows PC. 

My Internet IP address is from Archer BE550 80.220.229.228.

  @YoVissy 

Have you already verified that you can still reach your BE550 from the Internet? The easiest method would be to activate the BE550's "Remote Management" for a minute or two and check that the router login screen can be accessed from the Internet. (menu Advanced -> System -> Administration -> Remote Management)
 

  @woozle 

I did try it with my phone from mobile network. Did use "remote management" default port. It worked well.

  @YoVissy 

Then I don't understand why you can't reach your PC.

I just updated my own BE550 to firmware version 1.2.3 Build 20260127 as well and checked it. Port forwarding still works fine for me.

As a last resort you could try the "DMZ" feature of the BE550 (also in the NAT Forwarding menu). When enabled, this feature forwards all incoming connections for which there are no other NAT forwarding rules configured to the device whose IP address is entered in the entry field. Make sure the firewall of the PC is active when you set it as the DMZ host.

  @YoVissy 

I’m having the same issue on my Archer BE550 V1. Port forwarding rules are configured correctly, but external port checkers still show the ports as closed. Could this be related to G555 or perhaps CGNAT, ISP restrictions, or a firmware issue? Any additional troubleshooting steps would be appreciated.