I updated my watch a week ago. The watch's heart rate monitor, step counter and swimming has not been working since. I'm getting new software updates, but it still doesn't work. I've done everything that's suggested I do with the watch but it doesn't help. This is probably the software, the sensor on the back of the watch is not showing any sign of life. This has happened once before and what I described above start working right with a new software update. Is anyone experiencing this?