To resolve the "Network issue, please try again" error in the FitCloudPro app, follow these detailed steps:

1. Ensure Internet Connectivity: Check that your smartphone is connected to a stable Wi-Fi or cellular data network. Sometimes, a weak connection can cause app errors.

2. Restart Your Devices:
- Restart both your smartwatch and smartphone. This helps clear temporary glitches that may interfere with network connectivity. To do this, turn them off completely, wait for about 10 seconds, and then turn them back on.

3. Check for Software Updates:
- Ensure both the FitCloudPro app and your phone's operating system are updated to their latest versions. Go to your phone’s settings to check for updates.

4. Log Out and Log Back In:
- Open the FitCloudPro app, log out of your account, and then log back in. This can reset your session and potentially fix the network issue - learn more.

5. Uninstall and Reinstall the App:
- If the problem persists, uninstall the FitCloudPro app from your phone. Then, go to the app store, download it again, and reinstall. This can help if the app installation was corrupted - learn more.

6. Reset Smartwatch Settings:
- On your smartwatch, navigate to the settings and locate the option to reset to factory defaults. This will erase all the data on your watch, so ensure you have backed up any important information. After resetting, try connecting the watch to FitCloudPro again - learn more.

7. Bluetooth Connection:
- Turn the Bluetooth off on your smartphone and then turn it back on. This resets the Bluetooth module and might improve connectivity with the smartwatch. Ensure that your smartwatch is in pairing mode - learn more.

8. Contact Support:
- If none of the above steps work, consider reaching out to the FitCloudPro support team for further assistance. They can provide specific troubleshooting tailored to your problem - learn more.

By following these steps, you should be able to resolve the network connectivity issues with the FitCloudPro app.