Upnp challenges

[Mming]

I'm setting up a new OpnSense FW for my homelan, but have issues with Upnp to work properly.

Upnp is currently been set up to service my Xbox on a dedicated vlan, vlan2. This vlan is assigned on a network interface without any additional IP adresses. The interface is NOT asssigned to lan either. vlan2 is assigned to a 3.rd interface.

Installed upnp, tagged Enable, "allow UPnP IGD Portmapping". Extgernal interface is WAN and interfaces is assigned vlan2.
Tried both "default deny" as on and currently off. For "user specified permissions" I added the following for the test then I enabled "default deny": allow 1024-65535 192.168.2.28 1024-65535

When I check NAT from my Xbox I get "strict nat" and "upnp not successfull".
When I check status on UPnP service in Opnsense I get n entries, it just blank.

I get the sense that I'm missing something here, because this is, as far as I understand, something that now should just work.

Any feeback highly appreciated.

/Mming