I just uploaded a few weeks of workouts. I previously had many, many years of activities on the connect site, all edited with comments and notes. Now I just have a few activities from January this year. Where did everything go? None of the items I just uploaded appear either. Most everything is gone.
Garmin Support would be the ones to get with. Calling them is worth the wait on hold. I have seen some post very occasionally by others stating similar issues. Those that bothered to update us on the issue all stated that the activities showed back up when they logged on a few days later.