My guess is that whenever you use the wizard, the interfaces switch; your LAN is no longer the LAN, it is the WAN. What you think is your WAN is no longer the WAN, it has become your LAN interface.Default for OPNsense, if I remember correctly, is to define the first available interface as the LAN. Set a static IP adress within the same network range as the firewalls LAN address on a client. Detach all cables and try to do a simple ping test on each port available on your protectcli. When you've got a reply, you have found your LAN interface and can continue your adventure