I still get the same results and no choice of note (piano roll) or keyboard list.
What are the names of the profiles that you see in the view menu? When you say you get an ‘event grid’ instead of a piano roll, I may have misunderstood you. Also check that the mapping properties for the plugin has the ‘device is an instrument’ option checked.
After you have used ‘load default setup’, you need to reconfigure the MIDI/Audio interfaces dialog. That’s probably why you have no sound.
I doubt that reinstalling the program will make any difference.