You will receive a new password if you contact Hidetools. Once you received the new password, open the program, go to File menu and click Uninstall.
Also you can 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.