Hi,
I use a Vivomove Luxe as preferred fitness tracker. But since the Edge 1040 supports intensity minutes, I often take it off and let the Edge do the work to avoid scratches on the watch when riding trails and because the Edge seems to be more precise than the Vivomove especially at indoor cycling. Unfortunately, sometimes it doesn't work:
The ride (https://connect.garmin.com/modern/activity/9829775097 - @Garmin: you're allowed to open it and also my profile to check the prblem) contains HR data though:
There are others days, where it worked, e. g.:
I synced using both Connect on my Android phone and Express on a Windows computer.
Any help appreciated - thanks!