Can't access Internet with modem connected to OPNsense

[dmopn]

I'm running OPNSense 24.1.3 under Proxmox on a Lenovo M720q, with one inbuilt NIC and a four-port Intel PCI card.

All the ports are assigned to OPNsense as VirtIO bridges, and they are available in OPNsense. I've assigned the NIC to LAN and port1 on the card to WAN, as shown in the attached screenshot of the Overview screen. My ISP router is using 192.168.0.1, so I've assigned 192.168.0.2 to the OPNSense LAN port.

The clients are connected to a dumb switch, and that is connected to the LAN port, and my PC is set to 192.168.0.64, with the Gateway set to 192.168.0.1 when I have the modem connected to the ISP router, and I change it to 192.168.0.2 when I plug the modem into the OPNsense box, but even if I power cycle the modem to renew the address I can't access the Internet.

In the ISP router the Internet Connection type is set to Automatic - DHCP, and I've set the WAN interface in OPNsense to DHCP, but looking at the Overview screen it seems to get a DHCPv6 address but not a DHCPv4 one, so is that the problem?

Is 192.168.0.2 the right gateway address? Under System-Gateways-Configuration it only has a WAN_DHCP6 gateway, so do I need to add an IPv4 one?

EDIT: Never mind, it turned out I was plugging the router into the wrong port on my OPNsense box!