I have Helicon Remote V 3.9.7 which runs perfectly on my LG G4 phone under Android 6. My camera is a Nikon D7100 with WU-1a wifi adapter. It also works fine on my Samsung Tablet running Android 7.1.2.

However, on my Google Pixel XL phone running Android 9 (Pie) 3.18.131, I get "Camera is not ...