Hi there! I understand your Dexcom G7 app on your iPhone is logging you out unexpectedly, and when you try to log back in, the app freezes. Let's work together to get this sorted out.

To start with, could you tell me if you have already tried closing the app completely and reopening it before attempting to log in? Also, are you connected to Wi-Fi or cellular data when this happens? This info will help me guide you better.

Assuming you haven't tried some steps yet, here's what we can do step-by-step:

1. Force close the Dexcom G7 app: On your iPhone with iOS 18.6.2, swipe up from the bottom and pause to open the app switcher, then swipe up on the Dexcom app to close it fully.

2. Restart your iPhone: Sometimes, a quick reboot clears temporary glitches.

3. Check your internet connection: Make sure your iPhone has a stable internet connection (Wi-Fi or cellular).

4. Clear the app cache/settings (indirectly): iOS doesn’t allow clearing cache like Android, but you can offload the app. Go to Settings > General > iPhone Storage > Dexcom G7 and choose Offload App. This keeps your documents but removes the app itself. Then reinstall the app from the App Store.

5. Reinstall the Dexcom G7 app: Delete the app fully (long press the app icon and tap Delete App), then download it again from the App Store. This often helps with freezing or login issues.

6. Try logging in again: After reinstalling, open the app and try to log in.

If after this, you still get stuck on the login button freezing (like the green circle you mentioned), it might be related to server communication or a deeper app bug.

Do you want me to check if there are any ongoing service issues or known bugs with your app version or iOS 18.6.2? Also, please let me know if you have any other apps that deal with diabetes management, as they can sometimes interfere.

Let me know how the steps go, and I’m here to help further!