Have you looked through the FAQ’s?
Basic USB Webcam Setup
All Day Video Setup
Also, look in the webcam file in the WD program folder (or where ever you are storing the images) and make sure the images are being saved at the time interval you set. It looks like the same image is being saved each time.
You can add the time & temp to the image in the webcamcapture program, under the “Overlay” heading. 