@cognis0 glad I could help even a little bit! Just to check, are you in a 2 storey house (ground, first, loft) and are all the Decos in the loft? You might benefit from having a Deco on the ground...

@RogerCosta does every device in the house stop working or just the video device you're on? I'm in the UK and I had to disable WiFi calling on my phone because when the device hopped to another node...

@cognis0 apologies, I just had a proper look at the M9 Plus in a youtube video and apparently it doesn't have any screw mount holes in the base to ceiling mount it. That might not be a great idea if...

@David-TP thanks David, good to know! I just didn't want to upload firmware that might have been for another hardware version and potentially do some harm to my network

@cognis0 I'm not sure what you mean by horizontal but the antennae in the M9 will be configured to send and receive signals in a dome pattern on the side with the LED like my highly technical sketch...

@cognis0 if the M9s are just sitting in the loft pointing downwards they could be sitting directly over wires/joists, is the loft floored or can you see what's maybe blocking the signal? What work...