Ive bought the deluxe version before relase and was wondering how I activated the preorder skin/ where the code could be to activate it ingame.

Does any lone know something about?

This is the link that explain how do this :

https://kingart-games.com/page/26-how-to-use-iron-harvest-ingame-keys

Thank you, the problem is I never recieved a key (not in my account or via email).

Try contact gog support for resolve this issue..

It is developper thant send to me the code because I am a backer.