Hi, incredibly frustrated here:

Started with a steam trial, decided to buy the game through the current humble bundle promotion, but the key cannot be applied to a steam trial account. So I have to start over. Sucks, I can live with it, whatever... so the instructions say to log into mogstation and hit "add new service account":

https://support.humblebundle.com/hc/...cles/215857787

...but this button does not exist for me:



What the hell do I do here?