Hi there! I see you're having an issue with the Flighty app showing a blank screen and then closing itself on your iPhone running iOS 18.5. Let’s get this sorted out.

To start, can you tell me if this happens immediately when you open the app or after some time? Also, have you recently updated the app or your iOS? Knowing this will help pinpoint the cause.

In the meantime, here’s a step-by-step approach to try:

1. Force Close and Reopen: Double-click the Home button or swipe up from the bottom (depending on your iPhone model) to bring up the app switcher. Swipe the Flighty app upwards to close it completely, then try reopening.

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

3. Check for App Update: Open the App Store, tap your profile picture, and scroll to see if Flighty has an update available. Installing the latest version might fix bugs causing the crash.

4. Reinstall Flighty: If updates don’t help, delete the app by pressing and holding its icon, then tap 'Remove App.' After that, reinstall Flighty from the App Store. This clears the app cache and often resolves startup crashes.

5. Check Network Connection: Flighty relies on internet connectivity. Ensure you have a stable Wi-Fi or cellular connection.

Please try these and let me know what happens. If the issue persists, I’ll guide you through advanced troubleshooting.

Are you able to perform these steps now?