ok. When I launch the app it forces you to turn it back on, which i did, but still does not let me select HDMI/AV. Still says send failed. Video source setting :
"single video source"
"HD gimbal" is already selected (blue check mark) when I open this screen
when I select HDMI/AV I get the "send failed, please try again" message.
Version of the app is 1.03
what else is there to check?
Do you have an HDMI/AV source connected and powered to the LB Air unit? If there is no signal to recognize it may not give you the option. You should have both the control and video LEDs showing solid green on the Air unit and the LED on the Ground unit should also be solid green.