First of all, what Windows do you use? I am using 7 Ultimate with it's Registered. However it is for all Windows;
However first of all try to go to "Midi" then secondly "Midi panic" after you have done you may be wondering why, it is because "why not".
You just go to "Midi" and click Connect Midi In/Out or just hover to a button with a Plug circle
There i hope i have helped, if you still have a problem please reply me and i will do da best!
Meanwhile show your support here: https://midi.org/forum/14964-fold-keyboard