Can’t change to phone on Audio 6

As the title states I can’t change my Audio 6 to phono within Traktor Pro 3. I know that in the audio setup in the phono/line section you have the 2 input channels and next to them is a settings button you must click on to open another window to be able to toggle between line/phono. However, when I click on settings nothing happens. The button just goes blue if I click and hold the mouse on it. Nothing more. I’m using vinyl timecode. When i calibrate the vinyl it says low input due to only being in line mode. Any help appreciated. Thanks