I cannot get my run data from last 4 days to sync/ upload to my desktop ??

Syncing Your Data

• The Tracker will upload your data every 15 minutes provided you are within range of any plugged in base station (about 15 feet for direct line of sight), the computer is on and not in sleep or hibernate mode, the software is installed and running, and you have an active internet connection.
• While out of range, the Tracker will look for a base station every minute until it syncs your data, after which it will wait 15 minutes before searching again.
• You can see when the last successful sync occurred by viewing your main page at www.fitbit.com. Near your profile picture, you will see Synced with a time and date of your last sync.
• If you want to force the Tracker to upload its data, place the Tracker on the base station.
• While we recommend you sync your data regularly, the Tracker has the ability to store 7 days' worth of detailed, minute by minute data. It will store summary data (calories, distance, and steps) for the trailing 30 days. If you wait longer than 7 days before syncing, you will not see your minute by minute graphs (except on the most recent 7 days).
• Your Tracker is able to sync from multiple computers, as long as each computer has the Fitbit software installed and a working base station is plugged in. You don't need to physically connect the devices. Simply down load the app and upload your info.