Twitter: Photo Card's not working in Tweet's



right now my Twitter: Photo Card’s are not working in Tweet’s. I have developed my own URL shortener which generates URL’s like this and this URL will redirect to I have already checked in the Twitter: Card Validator and everything works, the Twitter * is whitelisted for Twitter: Photo Card’s.

Twitter: Card Validator Log:

INFO: Page fetched successfully
INFO: 14 metatags were found
INFO: twitter:card = photo tag found
INFO: Card loaded successfully
WARN: this card is redirected to

Since the Twitter: Photo Card works in the Twitter: Card Validator and Twitter: Card Preview I don’t understand why it does not work in real Tweet’s. It would be awesome if someone could help me to make my Twitter: Photo Card’s work in real Tweet’s.

Thank You
Thorsten Haak