NIS 2012 Antispam stopped working. Upgrading to NIS 2013 didn't fix

Norton Antispam (2012) worked fine for months.  Then suddenly it quit recognizing any spam I received.  I tried un-integrating it and re-integrating it (with a reboot in the middle) several times.  I didn't have time to work on it for a while and just lived with manually marking all spam ("This is spam").

 

Time has freed up a bit again, and I'm back to trying to fix it.  I hoped when I upgraded to NIS 2013 the problem would be fixed, but no such luck.  I tried un-integrating again, but that also didn't work.

 

Then earlier today when I booted up my computer I was informed that NIS was turned off.  I could not turn it back on manually, and the Norton Autofix didn't work.  I ended up chatting with support, where the technician uninstalled and then reinstalled my NIS.  Even that didn't fix it!

 

Since the reinstall, I've tried un-integrating and re-integrating, with rebooting, and that hasn't changed a thing.  All spam remains in my inbox, unflagged.  I even downloaded Norton Power Eraser and ran it, but it found no threats.

 

I've run out of ideas and now I can't get Norton Support Chat to work ("IE cannot display the webpage").  Any help out there?  Anyone else in the same boat?