Currently, coupons created from within the ONE+ app can only be applied to one-time purchases but not subscription-based products as this functionality is being added to Shopify only with third-party subscription apps. While using such a subscription app and creating a coupon through the ONE+ app I want to be able to choose whether or not the coupon works for subscriptions and/or just regular one-time purchase. https://help.shopify.com/en/manual/products/purchase-options/subscriptions