Hi there! I can guide you on how to close and restart the AirGuard app on your iPhone running iOS 18.7. Are you experiencing any particular issues with the app, or just looking to refresh it?

Meanwhile, here’s how you can close and restart the app:

1. From your iPhone’s Home Screen, swipe up from the bottom and pause in the middle of the screen to open the App Switcher.
2. Swipe right or left to find the AirGuard app.
3. Once you see the AirGuard app in the App Switcher, swipe it up to close it completely.
4. After closing, press the Home button or swipe up to go back to the Home Screen.
5. Tap the AirGuard app icon to reopen it fresh.

This will fully close the app and restart it. Let me know if you want me to assist you with anything else regarding AirGuard! Are you satisfied with this solution?

(If you want, I can also assist with troubleshooting further if the app still gives you trouble.)