Please click the folder icon below your camera thumbnail (in My Cameras page). You will see all image/video files uploaded by your camera. In your case, your camera has only uploaded one image.
Please verify that your camera is configured correctly. CameraFTP Viewer does not connect to your camera; instead, it connects to CameraFTP server and plays the recorded footage. It is easier and more secure as your camera does not need to be exposed to the Internet. However, your camera must be able to upload footage to CameraFTP cloud server.