I have multiple Android apps that I use with the RC depending on the situation. The default Android behavior is to prompt you which one to use when you connect the RC. At some point I accidentally checked “always use this option” for DJI Fly, but I can’t find any way to undo this. Does anyone know?
Delete the app and re-install. That usually works.
I figured it out.
Settings -> Apps & Notifications -> DJI Fly -> Advanced -> Open by default -> Clear.