UPnP not successful on Xbox Series S

MULTIPLAYER IS NO MORE ON TMOBILE

I have the exact same issue. TM eorked fine on all our consoles (XB1, XB Series S, PS5) and Windows PC for over a year until December 2022. "I assume you've reset the gateway. Have you tried an eternet cable?" Blah blah. One customer service person told me it was probably congestion due to more people on the network and that TM isn't good for gaming. I told them that it worked for over a year and then stopped working altogether on one particular day. If it is just congestion, we should be able to play at some point, like at 3 am.

No.

UPnP is unsuccessful every time. Also watched as NAT went from initially open to moderate or strict as my youngest tried to connect in multiplayer. As soon as NAT changes, down it goes. Usually within 1-3 minutes. Most games just disconnect at that point. Rocket League keeps him connected but the car looks like a creature from *The Last of Us* twitching without input.

 I just want them to tell me/us/the public  that they changed policy and aren't allowing multiplayer for x reason. If they can't say this, them fix it. Be honest TMobile! And if you don't know yourself, tell us that. But please stop the patronizing crap or pretending you've it's the first time you've heard there was a problem with gaming.

ExpressVPN allows my oldest to play multiplayer on PC but something is blocking the PCs ability to share a hotspot with the consoles as a virtual router. At one point the attempt to connect shut down the VPN and all websites offering VPNs. Every other site was accessible. Had to go back to share toggle for adapter to get it back.