Hi there! I understand your WalkFit app is not recording workouts on your iPhone with iOS 18.6. Let’s get to the bottom of this together. To start, could you let me know if:

- The app is not tracking any steps or workouts at all, or is it missing only certain workout sessions?
- Are you using any connected devices like Fitbit or Apple Watch to track your activity?
- Have you checked if the app has the necessary permissions on your iPhone for motion & fitness data and notifications?

These details will help me provide you with the best solution. Meanwhile, here are some general steps to get us going:

1. Check Permissions:
- Go to your iPhone’s Settings > Privacy & Security > Motion & Fitness and make sure WalkFit is allowed to track fitness activity.
- Also in Settings, find WalkFit and ensure permissions for Health access and notifications are enabled.

2. Ensure Background App Refresh is On:
- In Settings > General > Background App Refresh, check that WalkFit can refresh data in the background so it can record steps and workouts when the app isn’t open.

3. Check Connectivity (if using wearables):
- If you use a Fitbit or Apple Watch, verify the connection between that device and WalkFit is still active within the app settings. Sometimes, re-connecting the device solves sync issues.

4. Restart the App and Device:
- Close the WalkFit app completely and reopen it. Then try restarting your iPhone to clear temporary glitches.

5. Update the App:
- Make sure WalkFit app is updated to the latest version in the App Store, as updates often fix bugs related to tracking.

6. Review Step/Data Sync Settings:
- Within the WalkFit app, check if there are specific settings for workout or step data sources and refresh the sync if needed.

If you’ve tried some of these steps already, just let me know which ones so we can dive deeper or explore other solutions like resetting the app data or checking account sync issues.

Does any of this sound familiar or helpful so far? Let me know how I can assist you next!