Great question! Coupon codes are for new subscribers only so that they can try out the subscription to see if it is something that's right for them. Coupon codes can only be used once per person and address per subscription (unless otherwise noted during special announced periods). We think that Splendies are a great deal even at the regular price so we hope that you'll continue with our awesome sub! We reserve the right to charge multiple coupon code subscriptions at the regular price prior to shipment.