We are also experiencing this issue. Sandbox notifications send correctly, but despite multiple renewals a day we don't get any production notifications. Did you ever get them working?
SkritterJosh
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
From
Cincinnati, OH, United States
Post
Replies
Boosts
Views
Activity
Our notifications have not been working for any production subscriptions, but they are working for sandbox ones. Do they work for you when making sandbox subscriptions or purchases?
I ran into this same issue as well. It seems https is also supported the link just doesn't use it for some reason. You can right-click "Download dSYM", copy the link, add the "s" to "http", and navigate to that URL.