Video Card: Validator "Unable to render Card preview"



So I am just trying to test video cards using the validator and I always get “Unable to render Card preview” while other card types work ?

INFO: Page fetched successfully
INFO: 24 metatags were found
INFO: twitter:card = player tag found
WARN: Not whitelisted

I am not sure if I need to be white-listed before even trying the validator ?

Any help is appreciated :smile:


I requested to get the website white-listed and it seems to have solved the issue. Thanks