Hi Lars,
I am not with Laminar Research; just a flight simmer.
If your friend wants to be "ripped off", duped, scammed then purchase from g2A.
Have a look at the following link at https://questions.x-plane.com/20112/do-not-buy-by-g2a There are many others who have been caught in this scam. Some have been successful in getting a refund, others haven't.
Tell your friend to purchase directly from Laminar Research and support the developers. Don't buy a Steam version. It is not sold by Laminar Research. If you want Steam the Laminar Research web site tells you to go elsewhere. Don't waste your money. It is a third party product which in previous comments in this forum indicates any updates by Laminar Research are slow to flow through to the Steam users.
Glenn