While shooting the other day I pressed on the screen to try to focus on a spot. A yellow box appeared which I think had to do with setting brightness. Consequently (related?) I could not switch to the 7x lens and got a notice it could not be enable while focus tracking was active. I had not drawn a square on the screen or seen the green square to denote focus tracking. I could not get rid of the yellow box (something simple that eluded me) and landed the drone and restarted it. That was a big stick for what I am sure is simple. Any clue?