Because it's a WW2 based sim and they've been clear that they'll only accept skins that have a WW2 based, combat history that can be supported by photos and information.
Check here for guidlines
http://www.hitechcreations.com/ahhelp/skins.htmlSome basic guidlines:
We will not accept skins containing the swastiska. NOTE: If you are making a skin that originally had a swastiska, just leave the spot blank where the swastiska would have been, or change the swatiska to the Iron Cross. Use your best judgement on this.
We will not accept skins that alter the overall shape of the object.
We will only accept skins that were historically used in World War II.
Only submit the files/skins you actually change from the original.
The text description file must be named by the object name, such as p51d.txt for a P51D skin, for example.
