Today I boght this game on humble but afaik it's the same procedure activating it as it is on GOG so I am asking here.
I've redeemed my key directly at flipffly. After a while I received an e-mail with a confirmation ling for my account. TZher I could chose a password but I still don't have a username and no access to my race the sun account. How long does it usually takes until you get these data? I was expecting suuch things being a auto response and therefore not taking more than a few minutes. Please tell me how you activated your flippfly account and how long this took.

I entered an email and the key, got a confirmation mail right away, followed the link provided in the confirmation mail. This took me to a flipffly page that asked me to enter my desired username and password. Fairly straightforward stuff. Just try to follow that link from the mail again.