Hi, this morning i had no internet on my Deco mesh network, so I've checked the app. There ware multiple "Device_xxxx" (Device_5CF3 or similar name). By multiple I mean more then 10. I was like some neighbor has Deco and somehow connected to my network and I blocked all those devices.... and all my 3 deco devices start glowing in red at the same moment and the app went offline. I had to reset all 3 of them and create new network from scratch... I'm using Access Point setup in the cable variant: 1 main router from ISP -> switch -> 3 Deco's connected to switch 

After my new setup I have internet, but the strange devices keep showing and going off all day long.

Notice how one of the devices mirrors the trafic of my laptop. I'm pretty sure this is one of the Deco's, but I have no Idea why the app shows 4 and why at all shows them like "unknown" devices. Can be app or firmware update issue, but I realy don't know whats going on.

I've made sure I unplug every other hardware that I have from the "LAN" cable network so all those are not mine. Please help!