MoCA problem

Hello,

I purchased some time ago 2x GoCoax WF-803M, both are working fine...

First is connected in the basement of my house - here I am having my optical device (vrg-21412-plus-ii-rf) - internet connecting starting here

Second is connected on the second floor of my house (located in bedroom)

I recently purchased another WF-803M and add him to kitchen (which is on the first floor of house) - and I am having this problem:

If I connect all the devices (all 3) - the kitchen is not working (MoCa is not lightning)

If I connect only second floor (bedroom) with kitchen it is working (MoCA ligt is green on both devices), but of course I do not have the internet there..

The speeds then are around 470, both way (I forget to take a screen)

If I connect only basement and kitchen it is not connected (MoCa is not lightning)

Screens I take a few seconds in a row (when I connected all 3 devices)

And it is keeps repeating..

What should I do, where could be the problem?

Thank You