Our app is multi-platform android/web/ios, all platforms got their own payment mechanism, on iOS before buying subscription we are asking user to login to check whether they already bought subscription through any other platform so that user don't need to pay twice also to sync purchase with our server.
But apple keep rejecting our app with below message. Need help guy.
Apple's Message
Guideline 5.1.1 - Legal - Privacy - Data Collection and Storage
We noticed that your app requires users to register with personal information to purchase in-app purchase products that are not account based.
Apps cannot require user registration prior to allowing access to app content and features that are not associated specifically to the user. User registration that requires the sharing of personal information must be optional or tied to account-specific functionality.
To resolve this issue, please revise your app to not require users to register before purchasing in-app purchase products that are not account based. You may explain to the user that registering will enable them to access the purchased content from any of their iOS devices and provide them a way to register at any time, if they wish to later extend access to additional devices.