I travel around the world a lot so I bought a Moto e6 phone and subscribed to Google Fi as service provider. OS is Android 9.0. I cannot install the DJI Fly app on the phone. When I download and click on the "allow install from this provider" button, the app goes through the install process, but at the very end I get a very simple notice stating "app is not installed." And indeed, the app is not installed. No other errors or notices that might clue me in as to why it won't install. Any ideas?