Apple App Developers

You might want to contact the developer or publisher of an app for help if you experience one of these issues:

All apps on your iPhone open and function as expected, except for one.
You previously bought a non-consumable in-app purchase and aren't able to restore your purchases in the app.

Jun 29, 2020. Sep 01, 2020.

For iOS, iPadOS, and watchOS apps

Open the App Store on your iPhone, iPad, or iPod touch. Make sure that you're signed in with the Apple ID that you purchased or downloaded the app with.
Search for the app, then tap it. Or to find the app in your purchases, tap Today, then tap the My Account button or your photo at the top of the screen. Tap Purchased, then find the app. You might need to tap 'Not on this [device]' to see all of your apps.
Swipe up to find the Ratings & Reviews section, then tap App Support. If you don't see App Support, make sure that you're signed in with the correct Apple ID.

Use the iPhone that's paired with your Apple Watch and follow the steps for iPhone.

Open the App Store on your Mac. Make sure that you're signed in with the Apple ID that you purchased or downloaded the app with. If you didn't get the app from the App Store on your Mac, read about how to contact a third-party developer.
Search for the app, then click it. Or to find the app in your purchases, click the sign-in button or your photo at the bottom of the sideba, then find the app and click it.
On the right side of the window, click the app's support link. Scroll to the Ratings & Reviews section, then click App Support. If you don't see App Support, make sure that you're signed in with the correct Apple ID.

Open the App Store on your Apple TV. Make sure that you're signed in with the Apple ID that you purchased or downloaded the app with.
Search for the app, then choose it.
Scroll to the bottom of the page. You'll find the developer's website in the Information section.

If you're using an Apple TV (3rd generation), search the Internet for the name of the app to find the developer.