How to fix ngons overlapping wire edges? I am trying to make a retopo of my human head. But it seems that I already have several ngons because I couldn't create an edge loop.

So I checked it with mesh lint and it showed me the ngons



But the ngons are really quads as far as I can see.

Any idea why this is happening?

blend file
You have a large ngon face over the other faces. The same thing goes for the bottom of the nose and the chin. To fix this delete the large polygon and bridge the edges.


Select the large ngon faces:


Delete the faces only


Use bridge to add new polygons. Or you can fill them one by one using the fill tool: F

   
Do the same for the bottom of the nose and the chin.