I run a few Twitter pages for my company and am trying to get the summary cards to work. I noticed that Twitter Cards no longer requires whitelisted approval, but for some reason, when I run our links through the Validator, it’s unable to render a preview and the log states the site is not whitelisted.
Here’s an example of a page from one of our websites. http://www.cliniciansbrief.com/article/top-5-clinical-situations-can-t-wait
Can you advise?