Verify that your Zip is paired with your Fitbit account.
You should see an icon of your Zip tracker in the drop-down menu.
If you don’t see a Zip tracker icon, then you haven’t paired your Zip to your account. The following articles will show you how to set up your Zip:
How do I set up my Zip on my computer?
How do I set up my Zip on my iOS device?
Plug your Dongle into your computer.
Make sure your computer is connected to the internet as well.
Confirm that Fitbit Connect recognizes your Dongle.
On a Mac: Click on the Fitbit Connect icon in the Toolbar. You should see "USB Dongle Connected".
If you see "USB Dongle Disconnected", plug your Dongle into a different USB port on your computer.
Attempt to force sync your Zip.
If you still have trouble syncing your Zip uninstall Fitbit Connect:
On a Mac: search for "Fitbit Connect" in your Downloads folder. Open the zipped file, then click the Uninstall Icon.
Download the newest software version from www.fitbit.com/start/zip.
After reinstalling the software, please try to force sync.
If you see the following screen, insert your dongle into a different USB port on your computer.
If you still can’t sync your Zip to your computer, please contact support.