FT-3 DR - Set up help needed

I hope this is the right place to post.

It appears that I can not get my cable (from here) to work properly with any of my radios.

What works:
-PTT works
-In soundmodem I can see that audio is coming from radio

What does not work:
-Simply APRS messages can not be translated/interpreted. I could not do any other test (time and problem with VARA FM!).

What radios:
_FT1DR
-FT2DR
-FT3DR
-FT70

How I did test:

  • a FT3DR sends APRS beacons manually.
  • two computers run SoundModem 114 listen.
  • one is connected via VX-6
  • the other computer connected first through VX-6 and VX-7 to confirm all pieces are working and APRS messages are interpreted correctly.

-NON of FT series were able to work, I can visually see that something is coming in the waterfall (soundmodem).

Scratching my head here.