Today the Internet became unreliable and when checking the app all 3 Deco BE65 satellites were showing offline - the main Deco was fine. The Satellites are all connected using Ethernet cables to form a 2.5gb backhaul which has been working perfectly for many weeks.

2 of the satellites are connected directly to the main Deco via Ethernet. The third Deco connects to the main Deco through an unmatched 2.5gb Ethernet switch.

I tried rebooting them individually as well as together, but no luck.  The only way to restore the satellites is to unplug the wired Ethernet backhaul and switch to a WiFi Backhaul instead, even then they are very unstable.

I am not sure why this suddenly started to be an issue today. Any advice appreciated. 

Thanks

Brian