@Alexandre. Hi, Thanks for the reply can you tell me what's going on with the Deco's in my house please? I'm a bit lost as to what deco is connected to which devices either Main or the one near my sons room? 

  @TDawgSmitty 

Your Satellite Deco is connected to Main Deco using WiFi backhaul. Connection between Deco nodes is called backhaul. Signal link between Main and Satellite Deco is decent, so all is good with your Deco mesh. I can see that on first screenshot, which is "Show List."

There are two devices connected to Satellite Deco, as I can tell from screenshot of its info page: smartphone connected over WiFi and Sony TV with Ethernet cable. By the way, good idea to connect TV to Deco with Ethernet cable, I always recommend that.

I can't tell what devices are connected to Main Deco, you didn't share screenshot from Main Deco info page.

All in all, everything seem to be fine, configured properly and appears to work as expected. Do you have concerns/issues or just learning where in Deco app to get info?