Why does the heart rate monitor randomly stop ? without activity I usually discover several hours after the event that HR stops without any alert. This is annoying on such a high-end piece...
Has the pattern of your OHR sensor being disabled had any pattern? For example, when you notice it is not on, and you go into the settings of your watch and find it off, is it possible you synced it to the Connect Mobile APP just prior? A good example, each morning when your sleep and other wellness stats are synced.
due to lockdown, i even didn't try to send the watch back. After a perfect week with no stop at all, the OHR stopped 3 times in a row this morning due to 3 syncs with my IOS garmin connect. Monday is the first day of the week. So i suspect a software matter during syncing. The following syncs didn't renew the problem.
I think i'll wait until lockdown end to decide wether or not i send it back.