Since I have installed this router I have not been able to play Call of Duty Modern Warfare III. While it isn't the best game in the world, it is the core game that my group of gaming friends play.

• My PC is hardwired to the BE550.
• I have configured port forwarding for COD as described by Activision (for PC since I use Battledotnet), in the game my NAT type is Open.
  • Search for "ports-used-for-call-of-duty-games" to see the Activision support article
• I have reinstalled the game.
• I have verified files in the Battledotnet launcher.
• I have tried different DNS providers (Xfinity, OpenDNS, Quad9).
• Other games work and I have yet to find anyone else having the problem at the moment.
• UPnP is on in the BE550.

My previous router (TP-Link AX11000) is boxed up because I am moving soon. I wanted to get the BE550 up and running so I could have it ready to go for the new place.

Every attempt to play results in this error: 

Spoiler alert: All services show as good/great/grand/wonderful anytime I check that page.

Anyone have any ideas of what I could do to resolve this?