I was expecting to see activities under the activities section once my Fenix 5X Plus had synced with Garmin Explore.
Waypoints and tracks are visible in the library.
I created a new activity and watched the device sync. It showed that it was syncing an activity which seemed to have a date and time stamp as part of the filename. However it does not appear anywhere on the Garmin Explore App or on the Garmin Explore Web.
The activities are visible on Garmin connect.