Norton Internet Security for Mac 2012 - renewal problem

I just recently renewed NIS 2012 for Mac online, but it's not working. I uninstalled and reinstalled Norton Internet Security 2012 for Mac, but the status says "expired," even if I press the update notification. The Norton Setup Assistant doesn't show too, since it has been saying it's expired.

 

Is there a Norton Remove and Reinstall Tool for Mac? (not in .exe format)

 

Please help!