@DJDAN Here you can refer the ports used by Call of Duty - <https>://support.activision.com/articles/ports-used-for-call-of-duty-games

@D3C0D3R This can be answered only by a TP-Lin representative - that's why I advised to continue interacting with your local support.

@SheldonCoops TL-WR841HP doesn't support Easymesh feature - these are Easymesh compatible routers.

@QuuxPump Deco mesh is a different technology and it's not compatible with Easymesh (AX55) - details. Your setup is as it seems to be, but if you want to cover more area with AX55 you can enable its...

@D3C0D3R If the FW you have updated to was Archer C6(US)_V4_1.13.5 Build 240222, better let your local service to deal with the issue.

@tjfs Check this post for using WR841N in range extender mode. In HW v12 most probably a WDS feature is implemented.