Connecting Raspberry SamplerBox to Raspberry MidiHub

Hi Tae,
Maybe someone can help, but you're not giving much clues... so let's get more specific:

1. what is the version of your samplerbox image / was it downloaded from this site?
   
2. does it work when connected directly, ie: did you ever had it working?
   
3. how did you conclude it does not receive midi signals?
   

regards Noek