Looking at your HTTP Download page, I think the issue is that you’re downloading the satellite image and then asking WD to upload the same image to your website as animatedhttpfile2.gif. If you remove that upload from the settings then it should create & upload the second animation on it’s own, without you needing to tell WD to upload it. At least that’s what happens with animatedhttpfile.gif.
If you haven’t found it, the FAQ is here: Downloading & Animating Images 
Edit: I also found this SAT24.com page today with free animated images for us to use. 