Gl.inet ax1800 flint Upnp issue on Xbox

Set up the flint , set up vpn once I connected my Xbox I’m getting Upnp issue also moderate Nat type.

Any fixes ?

Read a few things on Luci app and open wrt files
But unsure on which ones and how to do it so any help would me massively appreciated

While using VPN you can’t have UPnP.

Please refer to the troubleshooting thread here to collect some information for us to understand your setup: How to get support quickly