Click on the Menu
Click My bracelet
Click Unpair the bracelet
Confirm by clicking on Unpair
Your bracelet is now disconnected from your app.
Go to your Bluetooth settings.
Search for a device named '287B'
Click on the device to access the device details.
Click on 'Disconnect' / 'Forget' / 'Unpair'
Your bracelet is now disconnected from your Android Bluetooth settings.
Force quit the app on your phone
Shutdown your phone
Wait for 10 seconds
Turn on your phone
Open the app
Follow pairing instructions, see video: