My 30 days trial has ended and I want to install the full version. I first uninstalled the trial version but it does not appear on my list of files in the "Add or Remove Programs" list on Control Panel. How can I uninstall it?
Try using Revo Uninstaller. Even if it can't uninstall the application normally, it will force it to uninstall by wiping out all traces of its presence from the system.
After that, try running AdwCleaner to make sure that there are no leftover rogue registry keys or toolbars in your system.