Hi Greg,
Phantom 4 Pro V2.0 is not officially supported yet and then we do not encourage our users to use the Phantom 4 Pro v2.0 with Pix4Dcapture even if the integration of last DJI SDK on iOS allows it.
As the development and testing for its support are still ongoing, you may encounter unexpected behavior when flying/using the app. My recommendation here would be to be patient just a little bit longer.
You can follow the main thread about P4P V2.0 support here.