One of my activities on Garmin Connect does not display. When clicking on the activity in the calendar, I get the following error: "failed to fetch model for overlayView". If I open the activity before it and click 'next' to attempt to open the problem activity, I get a different error message: "Unable to find com.garmin.activity.summary.ActivitySummary with id 335053234". I cannot access the part of my activity list that this activity is on, or any older pages on the activity list.
My problem seems identical to that discussed at https://forums.garmin.com/showthread.php?79699-How-to-delete-erroneous-activity-in-GC . The url of my problem activity is connect.garmin.com/.../221893479
Any help would be greatly appreciated.