@Tiger-TP From what you described and confirmed by screenshot, your Deco X60 experienced hardware failure and can no longer broadcast on 2.4GHz WiFi band. If it is still under warranty or return...

@FranCruzarianic If you want good WiFi coverage in every room, buy six Deco X20, put one per room and connect each to Ethernet. I can't speak for other brands of WiFi mesh, but if all you need is...

@Tiger-TP For that problematic Deco X60, what do you see under its Signal Source in Deco app. Example: Specifically, do you see 2.4GHz there, like in that example, just 5GHz, or what else? Would be...

@Louis13 It makes sense to switch Deco mesh to Access Point mode, if you don't need Router mode features. That could improve Deco mesh performance. It also might reduce jitter, but no guarantee. In...

@SimonKrogh Someone hacking into your Deco M5 is also unlikely. Next time it happens, if it happens, take screenshot of that login screen, it might give an idea what it is your device tries...

@SimonKrogh It is possible that one of your neighbors created WiFi network with the same SSID as yours, and your device tried connecting to their WiFi network. This could have been mistake on their...