Card not rendering properly with image in timeline

cards

#1

The following card is not rendering properly in the timeline. I do see some cards with images. How do I ensure my card below is able to be rendered with an image.

http://play.raydio.in/api/episode/076adfd0-136f-420e-8bb8-aff500aecf6b/render


#2

The image you have in the twitter:image field is hosted on a CDN, and the robots.txt file on that CDN prevents access to the file.