Hi there! I’m sorry to hear your Ancestry app isn’t opening on your iPhone. I’d love to help you get it working again. To start, could you tell me a bit more about what happens when you try to open the app? For example, does it freeze, crash immediately, or just not respond at all?

Meanwhile, I can walk you through some troubleshooting steps that often help:

1. Close and completely restart the Ancestry app. Double-click the Home button or swipe up from the bottom (depending on your iPhone model), then swipe the app off the screen to close it.
2. Check if there’s an update for the Ancestry app in the App Store. Updating often fixes bugs.
3. Verify your iPhone is running the latest iOS version. Since you mentioned version 18.6, it sounds current, but it’s good to double-check in Settings > General > Software Update.
4. Restart your iPhone by powering it off and back on.
5. If the app still won’t open, try uninstalling and then reinstalling it from the App Store.

After each step, try opening the app again to see if it works. Let me know if you’ve already tried any of these or if the problem persists, and we’ll dig deeper from there. Here’s the official Ancestry guide for reference as well: Troubleshooting Ancestry Apps.

How would you like to proceed?