We are sorry to hear you are having issues with the app. What exactly didn't work here?
The "Focus Not Applicable" message gets fired when we ask the camera if it is capable of being focused. If it says it doesn't need to be focused we don't focus it and grey out the focus mode switch. None of that should be blocking actual flight. The focus might be off, but not much else should be different.
The Air 2S should probably be focusable, so that is a problem.
What version of the app are you using? What remote? What firmware versions?
