The module was purchased from Rubadub.

Having the same issue with a new keyboard, midi in won’t receive information and there is no sound.The “Midi In“ Input on the module feels little flimsy and not as sturdy as the other inputs (tried to record the sound when patching in) could this be a hardware issue ?

After updating the firmware, knobula still won't receive midi from sub37, I will try with other keyboards as well, if the problem persists what should I do?