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Hi @QuanM - this may be a temporary issue, try holding the button for 10 seconds till it vibrates and the logo appears and wait for it to start. And also try restarting the phone and syncing.
If this doesn't help remove the watch Bluetooth entries from the phone, logout of the app, restart both again.
Login and wait for the Bluetooth to be setup and if it doesn't run the set-up a device and replace which ensure new Bluetooth entries which may have been a problem.
Of course it could just be a faulty speaker or the volume set too low, on the watch and even the media on the phone possibly.
Author | ch, passion for improvement.
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