I am not from Laminar Research; just a flight simmer from down under, particularly just below your country.
Firstly this site is for the official and original version of X-Plane. You are in the wrong forum. Steam is a 3rd party (modified) product and has no connection with Laminar Research. You need to solve your problem through a steam forum.
Steam installs differently to the official Laminar Research version of X-Plane.
Secondly, you mention "X-Plane.Org". This website is not and has no connection with Laminar Research found at X-Plane.Com
Good luck in solving your problem.