Ever since Garmin was held ransom the heart rate monitor has been iffy. Sometimes it's correct but other times it's very wrong. It used to work fine Garmin was hacked. Fyi
Ever since Garmin was held ransom the heart rate monitor has been iffy. Sometimes it's correct but other times it's very wrong. It used to work fine Garmin was hacked. Fyi
It seems strange that the hacking of the Garmin servers may have affected the operation of the watch. However, it might be worth to reset the watch (if you haven't done it already) and re-install the Garmin Connect app. I have a Vivomove Style now, but while I had the Vivomove HR (which never gave me serious issues for the two and half year that I kept it), it happened once that the page with the VO2 Max disappeared from the app on my phone while I could still see the data in my account page on the Garmin website. I removed and reinstalled the app and everything went back to normal. Although your problem is different, when there is both hardware and software involved, starting fresh often help