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.
Saulius Saltmeris from Peplink responded to me with a downgrade to 8.1.1s033 which works fine for me now.
He promised to come back to me with a fixed 8.1.2 version.
The firmware download link (fw8.1.2s058) given by @WeiMing is thebfixes for 8.1.2 version . Please upgrade the device using the firmware and let us know if you still see the issue.