@Solla-topee 

Hi, thanks for the response, I was working them on AP mode during the led issue, both connected to the same switch:

Modem/Router - Switch - Deco1&2 (Both directly to switch)

After that I had to change to Router mode and connected them as follows:

Modem - Deco 1 - Switch - Deco 2.

In this mode the led is working appropriately so far.

The Led feature is disabled on app.

The firmware and app are updated.

I didn't test wiring Deco2 directly from Deco1, my purpose was to make them behave like separate units because I have everything network related in a rack and wanted to use the deco units as end of the line devices, not wiring them together.

I came to this idea because in AP mode the topology showed on the APP is the same as in Router mode, with a primary and secondary units, maybe they don't see eachother and start behaving erratically.

I must say I still want to have them working as separate units (not interconnected), but I had to change to router mode until I get a new router. 

Hope it helps, contact me if you need more info.

Regards.