Onion Omega2Pro as a router

Hey everyone,

I am trying to implement an Omega2Pro as a wireless router, but I am facing a few problems.
Firstly, my objective: a WAN interface getting it's IP address through DHCP. Then, a lan bridge with static address, connected to my Wi Fi radio, with a DHCP server.

I don't know why, but I can't get it to work with any of my configurations. The only configuration I was able to get running is a dumb ap mode with static address on it's LAN interface...

A few important details, this Onion Omega2Pro devboard has no RJ45 port, so I had to get an expansion for it which includes a single RJ45 port. I flashed openwrt 22.03 onto it.

Anyone has any previous experience with this board?