YAY ...
EDIT (I am using version 3.9.11) and I have uninstalled and reinstalled the app on the phone to see if that was an issue.
The connections all seem to occur correctly
Choose Camera CC_Nikon etc.
Camera changes to "PC"
All of the camera settings are shown in the HR window on Android (such as shutter speed, aperture, ISO)
When I press "LIVE VIEW" on android I can hear the mirror raise and lower but the LIVEVIEW window stays black
I checked with the Nikon WMU and live view transmits just fine to WMU ...
But in Helicon Remote the part of the window that should show live view stays BLACK
... this means I cannot focus