There is no bi-directional communication with the Trigger Finger.
If you are using the Windows class driver, only one program will be able to access the Trigger Finger at a time. If you have an audio application running and you try to launch Enigma, it will not be given access to the Trigger Finger MIDI ports since they are already in use by the audio application. You can either a.) shut down your audio application before launching Enigma, or b.) install the Windows Multi-client Driver.
The Trigger Finger needs to be plugged in BEFORE you launch Enigma. If you launched Enigma first, shut it down and start it again.