I think there is a space at the end of the tech support link hence its showing up as page not found.
If we remove that space then the link is working and gives you the contact details for Tech Support.
As for the issue the following recommended steps for manual uninstall is right for older version of pgp desktop
(http://www.symantec.com/docs/TECH149057). The Uninstall script referenced does not exist on my machine (in any directory), nor does the directory (/Applications/PGP.app/Contents/Resources/
Since the PGP.app is changed to Encryption Desktop.app we need to alter the script a bit to run.
The old terminal command which we need to run was
Type sudo /Applications/PGP.app/Contents/Resources/uninstall_pgp.pl --uid 501 and then press Enter.
The new command would be
Type sudo /Applications/Encryption \Desktop.app/Contents/Resources/uninstall_pgp.pl --uid 501 and then press Enter.
Hope it helps