If the keys move then the MIDI notes are reaching B-3X.
ASIO Setting? This is relevant for that stand-alone B-3X program (not the plug-in). Have a look at the B-3X User Guide 2.1.1. Here I have:
And to control the drawbars, make sure that the MIDI CC messages generated by your controllers are mapped to the B-3X parameters (User Guide 2.6):
Why cannot you map all the drawbars to the controllers?
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As Promidi suggested it would help if you could Record the MIDI from your keyboard in a DAW (e.g. Logic Pro) so see if there is anything odd there.
To post images / screenshots: https://cgi.ikmultimedia.com/ikforum/viewtopic.php?f=19&t=27252