I have multiple problems connecting / syncing my Garmin Edge 810 to (a) my phone (Apple iPhone 8 - I receive an upload error); (b) my Apple Mac (message states "Not Connected") so I can't update my Garmin for software updates. I've noticed from previous correspondence on this site that this was identified as a problem c.12 months ago.
Additionally, my Garmin no longer connects with my heart monitor (all other sensors work). I've changed batteries, cleaned the sensors and disabled/re-enabled the sensor, but nothing worked.
Can you assist?