First, please, excuse my English, I'm just a Froggytarist

I'm discovering EM6.2 and firsts rhythm exercises was cool except one thing... The space key is not as precise as a MIDI keyboard...

So, I started looking for the way to use my master keyboard or my guitar synth (see my YouRockGuitar), except that just starting my master-key (a small 25 USB Midistart notes at Miditech ).
I'm declaring it correctly in the preferences and enable the MIDI IN button (F11), but nothing happens...
I'm using DAWs like Cubase since 1987 (while called Pro 16 on Atari and Amiga), so I'm usually aware about those things, but for now, I'm not able to correctly use it.
Is anybody can help me?
Thank you per advance.
Alix from France.