Having the same issue!! using a new Macbook 13' with the M1 chip to capture my 2015 15-inch macbook pro to stream to twitch. Its strange because the HD 60 S is detected and capturing video on the El Gato HD Capture software but on OBS/OBS Streamlabs there is no option for NDI Source, nor will the HD 60 S display show on either of the Monitor Capture or Video Capture Device sources. Someone please help!!