Change Card type not supported by Card Validator



I am new to cards so I wasn’t sure whicht type of card is the best for my site. I validated the type photo-card but would like to switch to summary. So the problem is, that the card validator does not seem to support this switch. It says that the domain is approved but gives a warn “WARN: Not whitelisted”. So there is no chance to approve the new card type for the domain? BTW: the preview of the card in the validator show the correct card. But it isnt rendered correctly in the twitter timeline.

Sample URL:
Thats the post for the url above:

Any suggestions?



I have requested the approval for any other subdomain. It was approved and now it shows also for the main domain.