In current software, UPNP only contains port forwarding; it is used to do port forwarding automatically.
If your router has UPNP function, please enable it and enable UPNP of the camera at the same time. Then camera will do automatic port forwarding to the router.
As UPNP is also easily affected by router or firewall, sometimes it may show failed status.
If that, please do port forwarding manually in your router, forward to camera’s ip and port.
After manual forward, UPNP succeed or failed has no effect on remote access.