Hi! I see that your TotalAV app keeps turning off on your iPhone. Let's get to the bottom of this together.

Could you tell me a bit more? For example:
- Does the app turn off suddenly on its own, or after you lock or restart your phone?
- Are you seeing any error messages or notifications when it turns off?
- Have you tried closing and reopening the app or restarting your iPhone so far?

Once I know a bit more, I can guide you through the best steps. Meanwhile, here’s a simple sequence you can try for iOS devices:

1. Force close and reopen TotalAV: Swipe up from the bottom (or double-click the Home button) to see all open apps. Swipe the TotalAV app off the screen to close it, then open it again.

2. Restart your iPhone: Sometimes, a fresh start helps clear minor glitches on iOS.

3. Update the app: Go to the App Store, check if there’s an update for TotalAV, and install it. Updates often fix bugs.

4. Check for iOS updates: Your current iOS is 18.6.1, which is recent, but just double-check Settings > General > Software Update.

5. Reinstall the app: If the problem remains, uninstall TotalAV then reinstall it from the App Store to ensure a clean install.

Could you try these steps and let me know how it goes? If the app still turns off, I’ll provide more detailed troubleshooting tailored for your iPhone.