When I launch the app on iPhone the starter screen appears then immediately shuts down. I’ve deleted and reinstalled the app and restarted both devices multiple times.

It can be frustrating to experience a crashing app where it prevents you from utilizing its features and services. At the same time, I appreciate the effort that you've already put into troubleshooting the issue in an attempt to resolve it.

The problem may be caused by compatibility issues or device settings. You'll have to make sure the app is compatible with your iPhone model and the iOS version you're currently using. Visit the App Store page of the app to check the compatibility details. If you're running an outdated iOS version, the app may not function properly.

To update your device's software, follow these steps:

1. Open the Settings app on your iPhone.
2. Tap General and then select Software Update.
3. If a software update is available, click Download and Install to update to the latest version of iOS. 
   

However, if the issue continues, I recommend contacting our support team so they can double-check your account and see why this is happening. Here's how to reach them:

1. Navigate to the (?) Help menu.
2. In the Search bar, enter Contact Us.
3. Click it at the bottom part.
   
4. Choose the Callback option.
5. Follow the prompts below so you'll talk to one of our representatives.

If ever you may encounter problems or issues when using the app, let me know so I can help you. The Community folks is always right here to provide further assistance when needed.