I am trying to set up a security camera that only accepts 2.4G. Is there a way to turn off the 5G so hopefully the camera will connect?

I just got a Deco system. I am trying to use "Connection Preference" to get an outdoor camera to connect to the unit closest to it, instead of the main one which is farther away. I have the unit...

I am trying to set up a home network with two new extenders. On Tether I have managed to set up one extender, but when I try to access the other one, or the modem, I keep getting "wrong username or...