Twitter cards doesn't work


I’ve installed the twitter cards and for a few weeks it was working but now it doesn’t anymore. I didn’t change anything.
Does anybody know what the problem could be?
Sanne from the Netherlands


You’ll need to tell us a lot more, such as providing links to your site with the cards code, and the Tweets where the cards are not working.


This is one of the links that doesn’t work. I have installed the cards with the SEO plugin. And when I’m running the link in de validator it says:
* is whitelisted for summary_large_image card

But when I put the link in twitter than the card doesn’t show.