The subject line pretty much says it all. I have repeatedly sync'd my Garmin Swim (Garmin Express reports success), but the latest swim workout does not appear. Any idea what's going on. I have been successfully syncing for months until now.
I have a similar issue today. My Fenix 3 synced this morning's bike ride wirelessly (I know this because it automatically synced to my Strava & MapMyRun accounts and (briefly) into MyFitnessPal. However, the activity doesn't show up in my Garmin Connect account. I tried connecting to my PC via USB and importing the FIT file manually and this showed up briefly - I edited the name and made a note of the link, but now that activity has also disappeared and the link doesn't work.
I am sorry for the troubles. Please see the FAQs: What troubleshooting steps should I try if I am unable to pair my ANT fitness device to Garmin Express? and Where do my activities go on the computer before they are uploaded to Garmin Connect?
The location in the second article may hold fitness files you can manually Import into Connect. You must add the .FIT extension to the file name before Importing. The Import link is located on the Activities page in the upper right corner.
If you continue to have troubles please contact Garmin Support by phone.