Norton Family uninstall

Hi,

I tried to install Norton Safety minder and Norton on line.  They used to work on my computer but now they don't.  It seems that it isn't completely installed and I can't uninstall it.  It notifies me when my son is web browsing something he shouldn't but it doesn't block it.  I would like to install it and start over but they both won't uninstall or re-install.  Norton on line asks for a password, but there is no place to enter one, just the gray box.  The safety minder doesn't respond when I try to uninstall it.  And I can't seem to reinstall or update them either.  I tried unplugging the connection and that didn't help.