Hi! I see that your Eufy app is opening but then closes right away on your iPhone running iOS 18.6.2. I’d like to help you get this sorted out. Before we jump in, could you tell me if the app crashes immediately after you tap it open, or does it open for a moment and then close? Also, have you tried any fixes so far, like restarting your phone or updating the app?

Meanwhile, here’s a basic troubleshooting path to start with:

1. Force Close and Reopen the App: Double tap your Home button or swipe up from the bottom (depending on your iPhone model) to bring up the app switcher. Swipe the Eufy app upwards to close it, then reopen it.

2. Restart Your iPhone: Sometimes a simple reboot clears up temporary glitches.

3. Check for App Updates: Go to the App Store, tap your profile icon, and see if there’s an update available for the Eufy app. Updates often fix bugs causing crashes.

4. Reinstall the App: Press and hold the Eufy app icon, tap "Remove App," then delete it. After that, reinstall the app from the App Store.

5. Check iOS Version Compatibility: Your iOS version 18.6.2 is relatively new, so confirm the latest Eufy app supports it. Most likely it does, but sometimes immediate app updates lag behind new iOS releases.

If these don't fix the problem, I can help with some advanced steps or deeper checks.

Have you tried any of these already, and if yes, which ones? That way I can guide you next accordingly.