@Bob69 These Deco devices are new and upgraded to firmware 1.3 at time of installation. The Deco app is latest from Play store. Firstly the online/offline devices count change dynamically. If you...

I have just replaced my Archer router and range extenders with a 3 x Deco X1500 mesh. I have maybe 30 devices on my home network, smart switches, cameras, and so on. Most of these are permanently...