Don't ever hold your breath waiting for any reply from HRV. From my experience , they have automatically set any incoming email to go to their trash bin , without ever being read. It's a complete waste of time.
They just could not be bothered with any queries or feedback. They obviously believe that they are "oh so very important" to ever bother what us mere lowly harness racing enthusiasts think. It's pathetic, but that's their current thinking. I can't see that attitude changing.