Hello, I have a question on how to handle monthly coupons on a recurring 3-month payment. Our offer: 1.: 3-months trial period for 40$ 2.: recurring 3-months payment for 60$ People will be able to "earn" coupons worth 20$, 40$ or 60$ (thus 1, 2 or 3 months worth of subscription) through participation on the site. How would you suggest setting up the process with the coupons? Ideally the coupons would be deducted (automatically activated?) every time the current 3-months period is over so that the next payment period is delayed 1, 2 or three months. Thanks a lot in advance for you help!