I have two problems:
Product.SubscriptionInfo.isEligibleForIntroOffer
always returns true.product.subscription!.isEligibleForIntroOffer
always returns false.
(product
is a random Product
with proper App Store-setup.)
This affects production, too. Currently my app offers trial periods for those too, who are not eligible anymore. Is there a working way to determine the eligibility? For sandbox, too?