What to do if the data synchronization between the mobile phone and the Redmi Watch 5 Active fails?

If the data synchronization between the mobile phone and the Redmi Watch 5 Active fails, please refer to the following methods to resolve this issue:
1. Refresh the page of the Mi Fitness APP and reconnect the watch to it;
2. Turn off the Bluetooth of the mobile phone and reopen it. Re-open the Mi Fitness APP and connect;
3. Restart the watch and the phone, and try to reinstall the Mi Fitness APP;
4. Make sure both the watch and the APP on your phone are updated to the latest versions;
5. Ensure the APP has the necessary permissions on your phone, such as access to location services, Bluetooth, and storage.