My vivoactive 4 has disconnected from my phone. I went and removed the device from my device list and then tried to reconnect it, but now it takes me through the whole process of pairing and it connects but as its busy finishing up the setup just before it finishes it then disconnects for some reason and I then get the error that the device has disconnected unexpectedly and that I should try again which I have done over and over with no luck. Please help.