I had my app on the app store for 1.99USD and now changed it too a freemium app with and in-app purchase(Ad-Free Version) for 1.99USD.
How can I go about upgrading my existing customers (those who bought the app from the app store ) as an in-app purchaser(Ad-Free Version) on update?
During internal testing, we were able to restore the purchase for existing users when they tapped on Restore Purchase without using receipt validation. Now, this does not work in the version that's in the App Store.