Hi there! I’m sorry to hear that the Atkins Carb app is giving you trouble by loading and then turning to a white screen. Let’s get this sorted out together.

To start, could you tell me:

- Which device are you using, and the iOS version? (I see you mentioned iPhone with iOS 18.4.1, correct?)
- Have you tried closing and reopening the app or restarting your iPhone?
- Is your app updated to the latest version from the App Store?
- Do you see this issue every time you open the app or just randomly?

Meanwhile, here are some step-by-step things we can try to fix that white screen:

1. Force Close and Reopen the App: Double-tap the home button or swipe up from the bottom (depending on your iPhone model), then swipe the Atkins Carb app off the screen to close it fully. Then re-launch.

2. Restart Your iPhone: Press and hold the power button, slide to power off, then turn your phone back on.

3. Check for App Updates: Open the App Store, tap your profile picture, then scroll to see if an update for the Atkins Carb app is available. If yes, update it.

4. Clear App Cache (if applicable): Although iOS apps don’t have direct cache clearing like Android, you can try offloading the app:
- Go to Settings > General > iPhone Storage, find the Atkins Carb app.
- Tap "Offload App" (this deletes the app but keeps its documents).
- Then reinstall the app by tapping "Reinstall App".

5. Check Internet Connection: Ensure your Wi-Fi or cellular connection is stable as sometimes white screens happen if the app can't load data.

6. Reinstall the App: If all else fails, delete the app completely and reinstall it from the App Store.

Could you please try these and let me know what happens at each step? That way I can guide you further if needed.