Thank you for using our app and for the interest in our products!
@ Ryan, Panayiotis: Which version of the app are you using and which operating system, Android or iOS? Are the latest firmware of the drone’s installed? Which camera was used?
There are different triggering modes for the grid mission. In Android the action to shoot a picture is based on a time lapse. In this case the app requires to be connected to the drone time to time to get feedback about its position. In iOS there is the Safe and the Fast mode. In the Safe mode the waypoints where the images are taken are uploaded to the drone before starting the mission. The drone will stop to take the picture, increasing the flight time. This means the drone can fly the mission without requiring connection with the app. In the Fast mode the app sends a signal when to shoot. This mode does not make the drone stop but the connection with the drone should be maintained without interruption.
Depending on the picture triggering mode, if connection with the app is required, it might happen that images are missing in the end of the flight. However, this should be an one-time problem meaning that we do not expect this to happen for every mission. Sometimes the images are captured but the camera icon on the flight track does not show up. Therefore, we always recommend checking whether the images are saved in the SD card of the drone.
@ Panayiotis, We understand that the ability to perform polygonal flights is a very important feature, therefore it is one of our top priorities for future versions of Pix4Dcapture.