We are happy you find the community helpful
About the camera not taking any pictures
For optimal experience with Pix4Dcapture, we recommend proceeding with basic checks. This article helps users to troubleshoot app issues in most cases. About the camera check, I would suggest having a look at this community post for more information. Also, you can click Follow at the top to be notified when there are new comments.
About flight height:
By default, the limiting height on Android is 150 m for all drones, but this can be extended to 500 m if the advanced pilot mode is activated for flying. On iOS, the limiting height is 500 m by default.
Note that we do not recommend to fly too high since connectivity issues might happen. Also, make sure that you respect local laws and that you do not fly higher than allowed by authorities.
The obstacle avoidance is not operational during an autonomous flight, meaning when flying a polygon, grid, double grid, or circular mission with Pix4Dcapture. It is recommended to make sure the flight plan is defined in a clear area and high enough to avoid obstacles.