What does the “Connect to Apple Store Progress Status” functionality do? 

To improve the restoring mechanism experience, we added a new Restore Dialog which displays the states of the restore process. If the Apple Store doesn't respond after a period of time, we will display the following message: “Apple Store didn't respond. Please wait or try again later.”

Which are the states for restore? 

The states for restore are the following:

            1. Restore Started;
            2. Update Transactions;
            3. Update Receipt;
            4. Update Subscription Information;