This is really unfortunate. I would hope a problem like this would be solved by now... I am not willing to sacrifice not being able to launch the game from Steam, so it looks like I am out of luck. Thankfully I can still return the game. (Yay Steam!) Hopefully these guys figure out how to fix this issue for future potential buyers.
I'm not quite sure what problem you're talking about? If you're asking if the Steam version of the game can be launched through Steam with Windows 10, then yes, it can.