Bought the latest version via trialpay a couple of days ago.
I managed to install it and enter my key.
After restarting my pc. I noticed that anything that uses internet wouldn't connect and I couldn't bring up the ZoneAlarm User Interface. The only way I can type this was by uninstalling the program.
I have a 1 year license doing nothing at the moment.
If it helps, my computer is running Windows 8 Professional.