Hello. Something you could look at. Go to Settings >> Servers >> Memory Usage.
If any of your remote servers display a status of "Secure Link Broken", then perform the following:
1. RDP to the affected server.
2. Go to C:\Program Files (x86)\SmarterTools\SmarterStats\Service\
3. Right click on the "ResetSecureLink.bat" file, and select "Run as Administrator"
4. Perform this same operation on the primary SmarterStats server
5. Restart both SmarterStats services