Apologies, I have the source code now for the INS app (through installation of the Aceinna Studio).
I have set the device to be NMEA_TEXT at 9600 baud. The GPS has a fix and is outputting the data, yet upon use of the Navigation Studio python driver with websocket, there is no latitude or longitude being reported (they stay as 0, 0). The INS page of the website also doesn't show any data.
Have I missed something?