Navigate to the exe in the Program Files folder:
C:\Program Files (x86)\Qdabra Software\Qdabra Rules Library (Trial Version)\QdabraRulesInjector.exe
and right click the QdabraRulesInjector.exe and select "Run as Administrator". You will only need to do this one time, going forward it should work correctly from the start menu without needing to be run as admin. Generally, if setup.exe is run as admin to install, this should not be necessary at all. Let me know if you still have an issue after trying this.