Many of my products have variations: one physical, one downloadable. How do I make a coupon that applies to only downloadable products? I tried targeting custom field “_downloadable” to “yes”, but even when I put digital-only products in my cart, I was informed the coupon “will be applied when its conditions are met”.
If I could choose meta key “attribute_pa_format” (which is always “PDF” for my store’s digital products), I would try that — but I don’t see that as an option.
-Ken