Does the uTrack24 sends out midi properly? I mean if you connect to any external powered midi device everything works fine?
I assume the issue may cased by the change in the midi standard (2014) . Previously the midi connector provided +5V for the external device, but with the new standard (the uTrack24 follow this) the voltage changed from +5V to +3.3V.
As I see correctly the Midi Solutions Programmable Midi Input Selector require +5V and does not work from +3.3V