Sorry, we couldn't sync your device. Please try again

Latest is 3.2.13?

Any issues after an update then you should try this http://support.garmin.com/support/searchSupport/simpleCase.htm?caseId={8a5f1480-ddf1-11e2-7dd9-000000000000}&kbName=garmin

OK now I got it to "sync", or at least it claims to have synced. I deleted an old upload on Garmin Connect queue from my profile. The errors have gone away, but the activities from the last few days are not syncing with Garmin Connect. Garmin Express claims to have successfully synced, but the last three activities or so are still stuck on the device.

When I run a ten second activity, it seems to sync ok, but the three from the past several days are not getting synced.

My activities sync ok so it may be an issue with your setup. Have you tried manually uploading, or even the steps here https://support.garmin.com/support/searchSupport/case.faces?caseId=%7B600f3dd0-3e6a-11dd-d7af-000000000000%7D

The link you've noted is dead. Can you confirm?

Works when I click on it. Try pasting it into your browser

This is what I get when I either click it or link to it. You might be accessing a cached version. Also followed link that you provided in another forum that I've since found (seems there are hundreds of users having the same problem). Also not linking.

This is what the link yields:

We are unable to process your request. Please try again.
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Try googling this then

What troubleshooting options can I try when my fitness device will not upload data?

Should be the top one in the list

I've listed below what the link yields, and while they are all valid steps to take in a normal operating manner, they do not address my issue. Not above, that I am indeed able to pair the device. What I am not able to do is to sync three specific activities from the past several days. Are there any work around options that allow one to manually sync or force sync specific activities that, evidently, Garmin Express cannot detect?

Below is the relevant verbatim from the search suggested:

If the wireless Garmin device is having issues uploading data to a computer, there are a few troubleshooting options available.

Verify USB ANT stick is connected properly.
Ensure device is out of power save mode*
Verify that Garmin Express is up-to-date:
Windows:
Open Garmin Express
Click on the Gear icon in the upper right corner of the application window
Click on "Check for Application Updates" under About Garmin Express

Another troubleshooting option is to verify that pairing is enabled on the device. To ensure pairing is enabled:
Forerunner 910XT / 310XT
Press Mode to access Main menu
Select Settings
Select System
Select Data Transfer
Verify Pairing is On