Got an E-Mail a week ago:

"Hello Khalinor,

You are probably aware that we finally launched the game not long ago.
The Kickstarter campaign was a few years ago and we want to make sure that everybody has a chance to get their Steam Key.

If you already have redeemed your steam key you don't need to do anything if you haven't here is the steam key that we sent you at the end of the Kickstarter campaign.

XXXX-XXXX-XXXX

We will also keep you informed soon about the additional rewards (extra keys, digital and physical rewards).

See you soon in in-game,
The Wolcen Team"

But still no second key ... what a joke ...