Hi there! I understand your Securus app on your iPhone (iOS 18.7) isn't opening and just sends you back to the home screen. Let’s try to get this sorted out.

To get started, a few questions:
- Do you see the Securus logo or any splash screen before it closes?
- Have you tried uninstalling and reinstalling the app already?
- Are other apps working fine on your iPhone?
- Is your iPhone’s iOS up to date besides 18.7, or do you know if this issue started after an update to iOS or the app?

Meanwhile, here’s a step-by-step you can try to fix this crashing issue:

1. Force Quit the App:
- Swipe up from the bottom (or double-press Home button if your iPhone has one) to see open apps.
- Swipe the Securus app off the screen to close it completely.

2. Restart Your iPhone:
- Press and hold the side button and either volume button until you see “slide to power off.”
- Slide to power off, wait 30 seconds, then turn it back on. This clears temporary glitches.

3. Check for App Update:
- Open the App Store, tap your profile icon at the top right.
- Scroll to see if there’s an update available for Securus and install it.

4. Reinstall the Securus App:
- Press and hold the Securus app icon, choose “Remove App,” then “Delete App” to uninstall.
- Go back to the App Store and install it fresh.

5. Check iPhone Storage:
- Go to Settings > General > iPhone Storage; make sure you have enough space.
- Low storage can cause apps to crash unexpectedly.

6. Reset Network Settings:
- This can resolve connectivity-related app crashes.
- Go to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings.
- Note this erases saved Wi-Fi passwords, so have them handy.

7. Check Permissions:
- Sometimes denying permissions can cause apps to fail.
- Open Settings > Securus app, ensure it has permissions it needs like Location or Notifications if applicable.

If after these steps the app still crashes immediately, we might want to check if there is a temporary outage or known bug with the latest app version on iOS 18.7. Would you like me to look further into recent reports? Or, if you’ve done any of these already, just let me know which ones so I can guide you deeper.

Are you satisfied with the solution I provided so far?