Three days ago, my Vivoactive 3 Music stopped detecting any steps and the heart rate monitor stopped working. The battery is also draining fast and the touchscreen and buttons are very slow to respond. The watch is also erratic - at times it skips seconds, then catches up around 15 seconds all at once. It can still record an activity.
I've done all the usual checks - everything is enabled - and hard and factory resets but to no avail. The green sensor lights blink after hard reset but then stop after that. Shortly before all these problems started, I wore the watch to go swimming. I've done this dozens of times and it's never been a problem, but I'm wondering if it could be a broken seal somewhere? Is there a fix, or is my watch now fit only for the bin? I'm currently on holiday doing lots of mountain walks and not being able to record my activities is a real shame.