Hi @JanSimon,
sorry for the late response. Tried to figure out what might be wrong. In my opinion it might have something to do with the name convention of the wings you are investigating.
@dylan & @pfernandez already gave some good input to that in Session 4.
I also saw that you have chosen “Solid1” for Mesh Refinments. I think you need to chose the parts of the wing instead of “Solid1”.
Tell me if you still encounter problems. I am willing to help you there 
Best,
Jousef