I have my Roland V-Drums (TD-50 Sound Module) hooked to my computer via a Roland UM-ONE USB MIDI Interface. The tab on the UM-ONE is switched to “Comp.” The USB red light is on. The IN/OUT lights are not on. In “Settings” then” MIDI In/E-Drums,” I’m getting “Waiting for MIDI…” in the lower left corner of the page. Please advise as to how I can connect my V-Drums to my computer and what I am doing wrong. Thank you.