The robots.txt on our image server https://d113i4fsxdnjl3.cloudfront.net/robots.txt is the example from https://dev.twitter.com/cards/getting-started#crawling however, we’re not seeing images loading on our twitter cards, e.g. https://www.ammado.com/community/158951
The page itself gives green statuses in the validator, however the image, and the robots.txt both yield
“ERROR: Fetching the page failed because it’s denied by robots.txt.”
The robots.txt hasn’t been modified since November 2012.
try placing th following code in your robots.txt file
User-agent: Twitterbot allow