Hi there! I see you're having trouble logging in to the MarineTraffic app on your iPhone using "Sign in with Apple." Let's work through this together.

To get started, could you tell me a bit more about the issue? For instance:
- Does the login fail immediately when you tap "Sign in with Apple," or do you get an error message?
- Have you been able to use this login method before on your device, or is this the first time?
- Are you connected to a Wi-Fi or cellular network?

Meanwhile, here are some initial steps you can try that often resolve login issues:

1. Close and Restart the App:
- Double-click the Home button or swipe up from bottom and pause (depending on your model) to open the app switcher.
- Swipe the MarineTraffic app off the screen to close it fully.
- Open the app again and try logging in.

2. Check for App Updates:
- Open the App Store, tap your profile icon, and scroll to see if a MarineTraffic update is available.
- If yes, update the app to the latest version as updates often fix login problems.

3. Restart Your iPhone:
- Press and hold the side button and either volume button until the slider appears.
- Slide to power off, wait 30 seconds, then turn it back on.

4. Ensure "Sign in with Apple" is Enabled in Settings:
- Go to Settings > [your name] > Password & Security > Apps Using Apple ID.
- Check if MarineTraffic is listed and allowed to use your Apple ID. If not, try logging in again to prompt this permission.

5. Reinstall the App:
- Press and hold the MarineTraffic app icon, tap "Remove App," then delete it.
- Restart your device.
- Reinstall MarineTraffic from the App Store and attempt to sign in again.

If after these steps you're still unable to log in with Apple ID, there might be a specific backend or server-side issue affecting this login method. In that case, contacting MarineTraffic support directly via [email protected] with details of your iOS version (18.7) and the problem may help them investigate further.

Let me know how these steps go or if you get any particular error messages. I'm here to help! Are you satisfied with the guidance so far?