Purchased mini2 than bought air2 with smart controller.
I could fly both across with mini2 controller now when I try to use mini2 controller with air2 it says unable to take off error 30064
Purchased mini2 than bought air2 with smart controller.
I could fly both across with mini2 controller now when I try to use mini2 controller with air2 it says unable to take off error 30064
Don't know what that code means. Try this, or go to the DJI Support section of the DJI website and start an OnLine Support (chat). Be ready to type in information about your aircraft (SN, etc.) as well as a description of what you've done.
First, I'd try these.
Have you re-bound the SC with each aircraft?
Consider completely deleting and re-installing the Fly App. And to the reinstall from the DJI website.