dktool

One other thing to check is that the ADX file is not set to receive via Bluetooth. If it is it may not work with a cable.
This is the RS232 checkbox in the tuner pro ADX editor.

A quick way to check is look at the ADX file, (use note pad to open it)

example
<!-- Written 09/12/2017 17:18:22 -->
<ADXHEADER>
<guid>18af8016-89a1-4b91-8b8a-92d2d7d416c3</guid>
<flags>0x10000</flags>
<objectcount>50</objectcoun

This shows the flag 0x10000 this indicates RS232 not set
If it was 0x01 the rs232 is set.

Make changes using tuner pro editor.

I've tried an early 10" Samsung tablet via Bluetooth ok, so right settings and cable it should work.

MOC