Images not showing on facebook when links posted.

I am absolutely climbing the wall with this problem, so this is a last dart. I am having massive problems with images not showing when posts are shared on facebook, and I now wonder whether it is a theme issue. Copying and pasting/sharing links doesn't show pictures. By using facebooks de-bugging tool I keep getting the same messages. Critical Errors That Must Be Fixed Bad Response Code: URL returned a bad HTTP response code. Errors That Must Be Fixed Missing Required Property: The 'og:type' property is required, but not present. Open Graph Warnings That Should Be Fixed Inferred Property: The 'og:url' property should be explicitly provided, even if a value can be inferred from other tags. Inferred Property: The 'og:title' property should be explicitly provided, even if a value can be inferred from other tags. The reason I believe it may be a theme thinking it may be a theme issue is that I have disabled all plugins, checked the source code, ran the page through facebooks be-bugging tool, and I am getting the same error code with whatever combination of plugins are active. I also get the same errors with no plugins active at all. I have installed these plugins. All in One SEO by Yoast NGFB+ Open Graph Facebook Image Fix Facebook Gallery My site is www.ilovefitflops.com Thanks