I played BS1 when it came out, and I'm getting back into the DCS games after missing out for a while. I just purchased and downloaded Black Shark 2 on Steam, and when I try to run a mission it cuts over to a screen asking for a key to activate the game. I have no idea where to find this serial number, Steam didn't prompt me with one and I can't find anything online for it. A-10C didn't do this, I'm not sure whats going on here.
Where do I find this damn key?