If data is not being received or transmitted firstly check the mobile status.
You can check the status of any of your mobiles by clicking the Mobile > T. Displays Current Status of all Mobiles. This will start your Internet Browser, and show the following screen from the CleanLink Portal:

Each mobile device is shown on a separate line. A mobile device will have a status that will match one of the following:

If the device is not connecting, Reset the device via Site Manager: Mobile > A. Select Mobile for Export > S. Send System Commands to Control Selected Mobile > Reset Device and then attempt to Re Link device.
To see if the data has left the server, Open Explorer and go to the Site Manager > PDA > CleanLink Mobile Service > Client Files folder and open the folder with your User name description. Select the appropriate device and open that folder. Double-click on the PDA folder. If there are data files in there, the files are not being transmitted to the device. If empty the data has gone and for some reason the device is not communicating.
Should data still be sitting in the PDA file the CleanLinkMobile service may not be running.
To check this, you will need to use your computer's Microsoft Control Panel. Go to the Services section of Administrative Tools. The service can be started and stopped from there.

If the CLMobile Service is running and data is still on the server, wait for 15 minutes re-send data to the mobile.
If in any doubt about the above, contact CleanLink Support.