Wifi router

> I've been trying to hook up the wifi router

   Which "the wifi router"?  An R6400?  "hook up" to what?

>  and I've followed all of the steps

   All of which "the steps"?

>  and it still doesn't work..

   There are many kinds of "doesn't work".  Which is this?

>  what am I doing wrong?

   The non-psychics in your audience have no idea what you're doing, let
alone what you're doing wrong.