LAN to Mesh WAN

Hi everybody
I don't fully understand how to manage "LAN to WAN" and "LAN ti Mesh WAN" features.
I have this mesh-Lan deployed, all device are on version 3.25.5.1

IQ5BL-node (hAP ac) in Club Station downtown with WAN connected to local lan (with internet access)
          |
          | eth5 with POE enabled
          |
IQ5BL-link (DtD)
          |
          | WiFi link %GHz (4 miles away)
          |
IR5ZZV-link (D2D)
          |
          | eth5 with POE enabled
          |
IR5ZZV-node (hAP ac) on local repeater location

I want to give IR5ZZV-node lan devices internet access like in IQ5BL-node local lan. I've tried to switch off "LAN to WAN" and switch on "LAN to Mesh WAN" in IQ5BL-link, IR5ZZV-link and IR5ZZV-node but no success on my goal. How can I win the deal? May I "tag" the WAN port in each eth port in which I want to have internet access? Or it's better deploying the mesh in another way?

Thanks for your help, friends!

73 de Leo IZ5FSA