Bonjour! It seems that you're having an issue with the "Measurement failed" error in the SmartHealth app. Let's look into this together and see if we can resolve it for you.

To begin, can you let me know if this issue happens during a specific type of measurement, like heart rate or steps, or if it's affecting all types of measurements? Knowing this would help narrow down the potential causes. Additionally, have you attempted any troubleshooting steps so far, such as restarting the device or the app?

Based on general troubleshooting for similar apps, here are some initial steps you can follow:

1. Check Device and App Compatibility: Ensure your device and SmartHealth app are updated to the latest version. Compatibility issues can often cause measurement failures.

2. Restart the App and Device: Sometimes, simply restarting the app or your device can resolve temporary glitches. Try closing the app completely (making sure it's not running in the background) and then restart it.

3. Check Sensor Connectivity: If you use any external sensors, ensure they are properly connected and have sufficient battery life.

4. Network Connection: If the app requires a network connection, make sure your connection is stable. Try switching between Wi-Fi and mobile data to see if that helps.

5. Reinstall the App: If the problem persists, try uninstalling and then reinstalling the app. This can help in case there are corrupted files or settings causing the issue.

If you've tried these steps and the error continues, there might be a deeper technical issue. In that case, I would recommend reaching out to SmartHealth support for further assistance or checking for any app updates that might address this specific error.

Let me know how it goes, and if you need further guidance!