Disappear Banner Images

Hi,

When i activate Swift Performance Lite plugin it definitely boost my web speed but my Header and Banner Images get disappear and product images remains there. As you can see on my website http://www.glowandfit.com there is a header in start which has blue image and when you scroll down there are 3 big images for Hair, Skin and Weight. These images get disappear after activating the plugin. Could you please let me know what is the problem?

The page I need help with: [log in to see the link]