I’ve loaded different twitter cards to my adobe muse site DentalPhotographyMadeEasy.com (using the Muse Themes Plus SEO Ultimate Widget V1.1). I’ve successfully validated the pages using Twitter’s Card Validator. The ‘Title’ and Twitter description load but the images do not. I don’t understand why the images don’t load and why the ‘Summary’ version loads when I’ve selected the ‘Summary Large Image’ version.
Here is an example page http://www.dentalphotographymadeeasy.com/recommended-dental-camera-bundles.html where a card should display with this large image
Here is what the card validator shows for the page: