Route for downward LAN

Hello everyone. Before anything, here's my current setup:


Currently, what I'm trying to do is make accessible from my OpenWRT device. I tried adding a simple route for with the gateway but it sadly didn't work. Could anyone see what the problem might be that I'm missing?

Thanks a lot!

the issue isn't with the openwrt device, but the mesh.

is the mesh using openwrt ?
does it have a firewall ?

putting the openwrt device on the meshs lan side, could possibly solve the issue,
but it depends on the configuration options of the mesh.