Hi there! I see your LDS Family History app is frozen and not responding, and you're unable to reset or use it. Let’s get this sorted out together.

Could you tell me a bit more about what happens when you try to open the app? For example, does it freeze immediately on launch, or does it get stuck after some action? Also, have you tried force closing the app or restarting your iPhone? This info helps me guide you accurately.

In the meantime, here’s a simple step-by-step you can try on your iPhone running iOS 18.6.2:

1. Force close the app:
- Swipe up from the bottom of the screen (or double-click the Home button if you have one) to bring up the app switcher.
- Find the LDS Family History app and swipe it up off the screen to close it completely.

2. Restart your iPhone:
- Press and hold the side button and either volume button until the power off slider appears.
- Slide to power off.
- After the phone turns off, press and hold the side button again to turn it back on.

3. Check for app updates:
- Open the App Store, tap your profile icon on top right, scroll down to see if there’s an update available for LDS Family History, and if so, update the app.

4. Reinstall the app if the above doesn’t work:
- Touch and hold the app icon until the menu appears, then tap “Remove App.”
- After deleting, open the App Store, search for LDS Family History, and reinstall it.

If these steps don’t help, there may be an issue with your device storage or a network-related problem, which could require some deeper troubleshooting.

Let me know what you’ve tried already and how the app behaves when you attempt to open it now, so I can provide the next best steps!