[Publish iOS] How to restore your iOS App Store subscription
If you upgrade to a later model, or decide to use a different iPhone, there may be some cases where your paid subscription doesn't transfer over to your new phone. In these cases, you'll need to restore your paid subscription within the Buffer app, following the steps below:
Tap the round avatar icon at the top left of your screen.
Scroll down to the bottom of your list of social accounts and then tap Upgrade to Pro.
A new window will open. Scroll to the bottom of the window and tap Restore Existing Subscription. This will link your Buffer app with the in-app purchase made on your previous device.