My Edge 500 used to synchronize perfectly, but since (maybe?) last fall that seems to have stopped. Garmin Express acts as if it is synchronizing, then announces a successful synchronization, but my activity files have not in fact downloaded (nor will the courses I am trying to get onto the Edge 500 upload). I can see the activity files using the Windows 10 File Explorer, and Garmin Connect will manually download the activity files, but that is not the same as synchronization. Having to manually download all of my activity files, and not being able to upload any courses (I cleaned out all of the files on the Edge 500 at the end of last season) is a real problem. Edge 500 has ver 3.30 on it and Express is (currently) ver 4.1.19.0
Any suggestions? Many thanks.