Tip: It is mandatory by section 3.1.1 of App Store Review Guidelines your application to support Restore purchases, so your users are able to restore their purchases after a reinstall of the application.
The title of the button.
Restore Purchases Button automatically implements its On Click Event.
When the Restore Purchases Button is pressed, it automatically initiates a restore purchases action with the App Store.
Note: Restore Purchases Button has no state, so the user can press it multiple times without any effect or problem.
Tip: If you need to perform additional actions after the restore, you can use the Events.
Restore Purchases Button supports Events that are automatically triggered during the restore purchases process.