F@ST 2704N V1 leds config and mapping

I installed openwrt 19.07.2 on F@ST 2704N V1 router , I'm having a problem with led configuration.
openwrt page :

original firmware said that the router is version v1.1 not v1 , the hardware is different because it uses a 64MB RAM.
1)while booting wps led is stuck on , and there's no way to change it through led configuration.
2)wps led is mapped to usb led , ( not a problem for now).
3)how to configure lan1 - lan4 leds for their respective switch ports , I tried linking them to netdev switch eth0 , with no luck.

I guess the gpio mapping is a little bit different.

I tried scrpits in https://openwrt.org/docs/techref/hardware/port.gpio with no luck either
any help is appreciated