Idle time scan cancelled

My idle time scans have been cancelled.  I can manually scan.  The automatic scans don't seem to be working  All settings are defaults.  I have uninstalled and reinstalled several times.  I am usinf internet security 5 for MAC  and runniong OS X 10.7.3

Can any one help?  Can't seem tpo get customer service

 

 

My idle time scans have been cancelled.  I can manually scan.  The automatic scans don't seem to be working  All settings are defaults.  I have uninstalled and reinstalled several times.  I am usinf internet security 5 for MAC  and runniong OS X 10.7.3

Can any one help?  Can't seem tpo get customer service