Recently, whilst running and listening to music on Spotify, my watch (Vivoactive 3Music) has crashed after about 3.5 miles. I saved the run and re-booted which took about 5 mins. None of the data, other than the time of the run and number of steps was saved. This has happened twice now in the last week. I've had the watch since early March and it was fine before. Any advice would be welcomed!