Have just purchased these. I have set up the network ok but cannot get smart lights and plugs to connect to the network. They all connected perfectly well to the main router modem or a wifi extender before Deco came on the picture. They all refuse to connect saying they need a 2.4ghz connection.

I have searched through these foums and seen others with the same problem and the suggested solution is to disable the 5ghz band and then connect - however I can see no way of doing that on the Deco app. Is there any way to do this with the E4 models? The firmware is all up to date as is the app itself.

Not particularly impressed so far - initially had problems connecting any device save for an Android phone - this seemed to be because the Decos will not connect with a complex wifi password - reduced the length of the password and Windows/IOS and amazon devices then connected (they all  worked fine with complex wifi passwords before too).

Any help will be appreciated otherwise these are going back.