Unless the forth coming fabled Android update changes things you are out of luck. Live ITVX is not a feature available on the Aura. I asked Humax about this several months ago as it is available online via a PC but not Aura. This is the reply they gave me.
“ITVX may offer a slightly different user interface on Android-based devices (like Aura) compared to the web or iOS apps. This can include changes to how content like the live feed is presented or categorized. The missing “Live” option could be part of such a difference.”