If you have a coupon for your membership, you can apply the coupon very easily when you sign up.
1. The first step is to choose your membership: Flow-Membership or Premium-Membership (either monthly or yearly)
2. Now fill in your customer information and click "Continue".
3. You are then asked to fill in your payment information. On the right side of the screen, you will find the option to enter your coupon (Discount code).
Important: After you entered the code, please click the "Apply" button.