title: IOS storekit subscription free trial not working
body: <p>I've got a subscription product for my IOS app; I want to change it to allow a free trial. I've edited the subscription in Itunes Connect to allow a free trial, however when I try to subscribe to the product, I get the standard message about buying a sub, not the free trial message. Is there any specific thing that I need to do to trigger the free trial, or do I need to create a new subscription product from scratch for it to pick up the free trial, instead of editing?</p>