I’m planning to upgrade my main Deco system since I’m moving from a 500 Mbps to a 900 Mbps internet plan. My current setup struggles to reach full speed I get around 450 Mbps likely due to the number

the deco app isn't showing and connected devices and the setting arnt saving and I have deleted and reinstalled the app

So I'm wondering if you can connect a switch to a deco m4