Z4 Having trouble with interior door panel

Hi .I think my window has come of the runner as I can still hear the motor running .Im hoping its this anyway . Iv had a look on here about getting the panel of but I can't seem to get the cover of that's behind the door leaver ? Tried varius things and methods but it's seems well and truly stuck on . Really want to sort ut soon as the window keeps sliding down on it's own .any help really appreciated thanks kelly