Why I can't show twitter cards on a tweet?

redaktionsb · 2014-01-28T19:50:13.000Z

Why I can’t show twitter cards on a tweet with this link http://selbstbestimmung.ch/wissenschaft-technik/accessibility-apero/? The site is valid for twitter cards.

arif25877857 · 2014-01-29T12:49:03.000Z

i have same problem

PostcardsJesus · 2014-07-20T18:28:04.000Z

I am having the same problem. Does anyone know HOW long before the newly validated twitter cards will reflect in the tweets? I just need some idea of what Twitter’s time frame is or to determine if something else is wrong. ??? Why haven’t we heard from a Twitter rep on this post yet?