@omazza Read the guide that I posted carefuly. In Step 4 it is said that you should login your DSL modem with your TP-LInk ID (these are your credentials to login the community). Once you've loged in...

@Moonny You could try setting the Asus wireless channels as static (not Auto) and see if there's any improvement.

@omazza To use TP-LInk DDNS service you should login your DSL router with your TP-Link ID - details (Step 4).

@aggrajag You can't do that. Deco mesh is quite different technology from Easymesh or Onemsh - details. You could use almost any TP-Link DSL router and set it in bridge mode (with Wi-Fi disabled) and...

@ArcherC50help Can you describe your network infrastructure (what are devices in your network and how they are connected). What is their configuration - this behaviour could be due to a web browser...

@Kevin_Z The screenshot is from a C64 in AP mode, which I posted just as a visual example. The OP most probably is using his AX55 in router mode.