OK, after one hour more desktop research, here comes the solution:
www and so on (I'm not allowed to post links)... howtogeek.com/337360/how-to-remap-an-xbox-one-controllers-buttons-in-windows-10/
We have to download the 'XBox Accessories App' from Microsoft (create account, verify code, download app - how annoying), then start this app and globally invert the right sitck's Y axis.
Now the vertical axis of the right controller stick is globally inverted and now let's have fun with the game - and if you meet one of the developers, kick them!
thanks for the info, but i think i'll just wait untill a fix from the devs comes, if not then i guess its a game i will just have to miss out on :(