On the majority of our libraries the key switches are on the lowest octave to avoid overlapping with the playable range of the instrument (or instruments). Sometimes though this is not ideal, for example if you are using 25, 49, or 61 keys instead of 88 keys on your keyboard controller.
Thankfully it is very simple to change the range of the key switches. Please see this video below showing the process of changing to the expert view and then dragging the keyboard icon in the bottom left of the window.
Once you are happy with the new settings you may want to save the .nki so that the settings will load every time.