Good luck with your problem.
Steam is a 3rd party organisation taking a commercial advantage of the work carried out by Laminar Research. For your information the DVD steam version of X-Plane was released onto the market long before the official version of the DVDs were released by Laminar Research. At that time only the digital version was available from Laminar Research.
Unless you get other flight simmers to help with your problem Laminar Research will not offer any support. Your best result may be to take your problem back to the Steam Developers.