As the title says our twitter cards are not showing up. I know that this problem isn’t that rare but I tried to figure this out by myself, without success. The weird thing is that they showed up before but since the last 2 weeks (or so, wasn’t paying attention) they are not working.
Here’s the link to a tweet: https://twitter.com/feine_Matratzen/status/600181024702603265
And the correspondending URL: http://feine-matratzen.de/tonnentaschenfederkern-matratze-diamant-7-zonen.html
In the Card-Validator everything works fine but as you can see not in twitter itself.
I hope somebody can help me here.
Thanks and greetings