Twitter Card Validation Period?


Is there still a validation period for the cards to appear on my twitter? I’m seeing my site as whitelisted but when I share a post from my site or look at my page from an external account the cards are not showing the featured image. I am using Yoast SEO plugin to add meta data.

Please see:


If you click on the View Summary link you’ll see the image. The images should show up in the timeline in the mobile Twitter apps.