The FireDaemon Pro GUI must be run as an administrator to function correctly. On Windows Vista, 2008 or later FireDaemon Pro GUI will need to elevate. If you are logged in as a regular user and run the FireDaemon Pro GUI - no services will be displayed.
FireDaemon Pro Services can be run as any user; however the privilege of that user will determine whether the service can interact with the desktop, access network resources and so forth. As a rule of thumb services should be run as LocalSystem (that's the default). If network access is required, then generally run your service as a local or domain administrator. FireDaemon Pro will automatically grant user accounts "Log on as Services" rights.