Does the display of your Samsung Galaxy Note 10.1 (2014) not work anymore, but do the capacitive menu and back keys still light up? Then this might be an easy fix. Get the back cover off your Note 10.1, detach the connection cable, retach and you’re good to go!
Apparently some S view covers seem to have proximity sensor problems. This is an easy fix to make this case work with S view cover apps.