Hi there! I understand your Alpha Omega app keeps crashing and won’t reopen on your iPhone with iOS 18.5. Let's get this sorted out together.

To clarify, does the app crash immediately after launching, or does it crash after some time or when you try to use a specific feature? Also, have you tried any troubleshooting steps already, like restarting your phone or reinstalling the app?

Meanwhile, here’s a step-by-step approach we can start with to fix the crashing:

1. Force Close and Relaunch: Double-tap your iPhone’s home button or swipe up from the bottom (depending on your model) to see the app switcher. Find Alpha Omega and swipe it up to close it completely. Then try reopening it.

2. Restart Your iPhone: Sometimes a full device restart can clear temporary glitches. Press and hold the side button and volume up or down button until the slider appears, then slide to power off. Turn it back on after 30 seconds.

3. Update the App: Go to the App Store, tap your profile icon, and check whether there’s an update for Alpha Omega. App updates often contain bug fixes that stop crashes.

4. Check iOS Updates: Since you're on iOS 18.5, confirm you have the latest minor update. Go to Settings > General > Software Update to ensure there are no pending updates.

5. Reinstall the App: If the above doesn't work, touch and hold the Alpha Omega app icon, then tap "Remove App" > "Delete App." After that, reinstall it from the App Store.

If none of these fix the problem, there might be an issue related to app data, account synchronization, or a known bug. At that point, I can guide you through checking your app permissions, resetting network settings, or contacting Alpha Omega’s support directly for their latest fixes.

Could you please let me know what you have tried so far? And if there’s any error message or specific behavior when the crash happens? That will help me tailor the next steps precisely.