We sell products with monthly subscription www.niceria.de. If we use a coupon or a gift card some orders are completely for free so you do not need any payment method.
I guess because of the subscription nevertheless shopify asks for a payment method. But if you choose paypal the order ends into an endless loop. The moment you want to order it jumps back to the payment page.
It is working properly with credit card but not all of our clients have one.
Any ideas? bug fixes?