Buying the prologue doesn't go towards the main game... wtf?

[Lowenbrau]

Every other early access game I've ever played did not require me to buy the early access, and then the main game. Man, this is messed up....

Worse yet, even after downloading the patch, the prologue won't start.... You're not off to a great start, guys.

[Daddington McDouble Daddy]

how do i start the prologue. It crashes instantly