XBOX games can’t connect to their servers
I've been dealing with this problem for almost an entire year now. But for some reason, the games on my XBOX can't connect to the Internet. The XBOX itself connects fine as I can download games just fine and do everything else but actually play games online or use the online experiences within games.
I've tried every possible solution off of Google (DMZ, port forwarding, DNS changes, the whole shebang) and I've even had my XBOX replaced as a last resort a few months ago. My Internet provider sent a technician out yesterday who also tried several solutions including hard wiring the XBOX to the router but nothing worked.
I'm convinced now this is a router issue. My XBOX works flawlessly on my phone's mobile hotspot, and it also worked fine on the technician's router that he had with him and plugged in for troubleshooting. TP-Link's customer service has been useless and has even hung up on me a few times instead of actually providing some technical support.
I love this router, but I can't overlook the fact that because of it, I now have a $900 paperweight (XBOX price + 2 year GamePass subscription) as it's honestly shocking how many games rely on server connections to be enjoyable or even just playable.