I am trying to do this for a subscription product + two non-subscription products and discount.
It adds all of the products and the discount but it set the first product for one time purchase instead of subscription. Here is the base product page for reference -
shop.myphenology.com/products/morning-evening-gummy-duo-supplements
Here is the permalink I’m working with-
shop.MyPhenology.com/cart/39853678231617:1,39853677903937:1,39870377590849:1?selling_plan=578977857?discount=SamplerGift