Help configuring ports. TECHNICIAN NEEDED

I need an escalation for an inbound IPv4 port-forwarding/NAT issue. My PC is 10.0.0.199 and my public IPv4 is [Edited: "Personal Information"]. TCP 47984 is confirmed LISTENING on 0.0.0.0 on the PC, and Windows Firewall explicitly allows TCP 47984. The Xfinity app has a TCP 47984 port forward assigned to the PC. I power-cycled the gateway and deleted/recreated the rule afterward. An external device on a completely different Wi-Fi tested [Edited: "Personal Information"]:47984 and it remains CLOSED. Advanced Security/CyberSecure is OFF, DMZ is OFF, WAN shows IP translation NONE. Local Xbox-to-PC connectivity works. I need the gateway/NAT port-forward provisioning checked, not Xbox or Sunshine troubleshooting.