So we are trying to implement twitter cards, but we’re not having much luck. Our meta data exists in the markup, but we’re getting a whitelisting error when I try to validate the card that is on this page: http://www.lolesports.com/en_US/articles/stories-behind-worlds-x-zedd-music-video
This is the log of the validator:
INFO: Page fetched successfully
INFO: 5 metatags were found
WARN: Not whitelisted
Any assistance would be great.