@Dean124 When setting up your Deco, it asks you to set a password. What did you do?

@Qills Is Wi-Fi turned off in that ONT/Router? Did you try setting QoS to 100 Mbps?

@malibu66 Since a phone app is the only way to access the divice, the hardware I purchased today could in theory become 'incompatable' with the current version of the app and thus unmanagable. It...

@larkim 1.6.2 is for EU firmware of M4, most likely the other 3 Decos have US firmware

@Runixo Is your network setup like this: modem > switch> Main Deco ↘ Deco 2 ↘ Deco 3

@HelpMee What's your network setup exactly?