Have you watched this video guide? It’s in a different language, but it’s easy enough to follow the images.
I don’t know how long the DVD version would stay relevant, though. If they give you 20 GB update for every world update. In a few years, if you install using the DVD that was compiled the first day on launch, it’ll basically redownload the entire game as an update, since the files in the DVD becomes obsolete.
But give this video a try, it looks like after installing from the DVD it opens the Microsoft Store and downlaod the update from there. So maybe check the store and see if you have the flight sim in there, and launch it from there?
