It may happen sometimes that the health band links with the phone or some other apps, and this disables the connection between Helo app and device.

1. Open the phone's Settings.
2. Tap Connections.
3. Tap Bluetooth.
4. Tap the Settings icon next to the health band name.
5. Tap Unpair.
6. Log into the Helo app again.
7. Go to the “Device” page and choose “Health Band”.
8. Now search for your device and link it back to the app.