WAN port as LAN on MAX BR1 Mini with WiFi WAN License

Hi,

On a PepwaveMAX BR1 Mini LTE with the WiFi WAN license.
WiFi WAN functions properly
The WAN port is configured in Network>LAN to be a LAN port.
I try to use the WAN port as LAN, although it is configured it does not connect.
FW 8.12 Build 5054

I try to use the WAN as LAN because of I intend to use the PoE which is only available on the WAN port.

Thanks,
Peter