GE Profile In door ice maker

My ice maker will not make ice, the issue seems to be lack of cold air at the top part of the ice maker. The ice maker will fill with water but it won’t freeze or lightly freezes. Should there be cold air entering through the top vent hole from the freezer? The temperatures in the fridge and freezer are fine, I can’t think of any other possible issues? There seems to be cold air entering at the bottom of the ice maker however I thought that was the return or should there be cold air coming through both vents.