Du hast Recht. Heute früh kam gleich die Antwort.
Thanks for getting in touch. The issue here is that you have used a different email address for your Gamefound account to the email you used for your Kickstarter account. The credit is assigned to the account matching the Kickstarter address.
I have cancelled the credit on your other account and applied it to your order as a refund, so everything should be sorted now 😊. Let me know if you need anything else.
Kind regards,