Garmin Duplicating My Activities on Friend' Strava.
Emailed Strava about this last week but only received an automated response so far (despite being Premium and replying to that email asking for more help).
He did a Factory Reset on the unit before registering with Garmin and deleted all my activities.
However, now when he plugs the device into his laptop, all his activities sync with Garmin & consequently Strava, adding 7000 miles of my rides to his Strava account!!
Is there an easy way to delete all these activities by device on his account?