since a few weeks I cant upload my activities to https://connect.garmin.com. With the modern version it never worked. But now, even with the classic version it doesn't work any more. On Garmin Express it seems to start sychronisation but after aprox. 1 minute I get the errror message "Bei der Synchronisation mit Garmin Connect ist ein Fehler aufgetreten"
Synchronisation with Training Center is still working.