If you use CameraFTP VSS software, then you shall not configure your camera to upload images/videos to CameraFTP. CameraFTP VSS software can connect to your camera's video stream, then create and upload video clips to CameraFTP.com on behalf of your camera.
In your case, your camera is configured to upload image snapshots to CameraFTP.com continuously. This uses one extra camera license. Please log on to your camera's configuration page and remove CameraFTP's FTP server info from your camera. This will not affect VSS. Please make sure you do it ASAP. Otherwise, you will exceed your usage limit.