You cannot redeem Cookidoo® vouchers while you have an active iOS store subscription.
Once the subscription expires, you can redeem the voucher by logging into cookidoo.thermomix.com and selecting Account > Vouchers > Redeem.
If you need further assistance, please contact us at https://service.thermomix.com/hc/en-us/requests/new. Our Customer Happiness agents will get back to you in 1-2 business days.