Could it be because the panel is coded to use a particular midi channel? I had a similar experience with another panel, the Kiwi-3P, and spent a while trying to figure out the same thing before remembering I had read on the posts related to that panel about the midi channel being set to use Midi channel 1 only, and since I had previously set up my Kiwi Technics modded JX-3P on channel 3 it wasnt working no matter what I did.
Check the code of the panel you are using to see if it is set on a specific channel, or email the developer of the panel to see if he can help.
Good luck and let us know what the reason was if you do find out 🙂
