I don’t know if this will help anyone, but I have managed to get iC pro going again on my Nexus-6 Android.
This is how:
Go to the Devices menu in Nuendo/Cubase and select “Device Setup…”
Select “Steinberg SKI Remote” from the pop-up list and leave the dialog open
Launch Chrome on your Android device and enter the SECOND http address shown at the bottom in the “Nuendo/Cubase device setup”. If I enter the first http address it does not work, but if I enter the second one, in full, it does work : ‘http://xxx.xxx.x.xx:xxxxx’
Good luck.