Fix iOS In-App purchase methods (objective-C) that stopped working

I have an iPhone app (objective-C) that stopped restoring and retrieving the correct expiration date of Auto-renewal subscriptions. The app currently connects directly to Apple production server ([login to view URL]). It is possible only to start a new subscription. I am working wit IAPHelper class, (via cocoa pod): [login to view URL] In development, though, when connecting to Sandbox server, everything works good. App is already released. And I have two auto-renewal subscriptions set up: * [login to view URL] * [login to view URL] Whenever you open the App, or go back to main screen, it also should validate the subscription expiration date (not working). THE TASKS TO THIS PROJECT: 1) Rewrite/fix the class PurchaseViewController, so it is able to restore the user subscription, if it exists and it is not expired; 2) Rewrite/fix the class HomeViewController, to verify subscription expiration date against current date; Currently I am not planning to make server-to-server validation because of small number of current subscribers. It needs to be done in Objective-C; Preferably, I will provide access to the source code via gitHub (but I can accept different solutions); I need to test it in AppStore to be sure everything is working fine. I have a real device with a valid subscritption, therefore I will test it immediately after AppStore release, which usually happens 1 day after it is submitted to review. So please expect a one-day delay in payment release.