This could be my lack of network topology understanding.
So I have a single ethernet cable to the router (not feasible where it is to run a second one from my central switch). So That cable is plugged into the WAN port. I think I need a second cable from a switched port on my orbi (yes, you're right it has 4 switched ports) to feed back to the router. Yes?
Or is there some way to use link aggregation modes and skip the WAN port entirely so I can route the internet AND feed the rest of my wired connections with a single ethernet cable?
The ONT connectino comes into a wired switch that has connections to the rest of the home. The switch then has the ethernet out to the orbi in router mode which I have plugged into the WAN. This worked just fine for wireless connections, however I think since I didn't have a second ethernet cable from the Orbi LAN back to the Switch it wasn't able to connect to my wired connections.
Does this make more sense of it? I have a plan that I think will work to relocate the router where I can connect to the WAN and a LAN port.
Thanks for your help and second set of eyes! Much appreciated. Let me know if I'm totally missing the boat on something!