I created Summary Card with Large Image
On Card Validator i got msg:
INFO: Page fetched successfully
INFO: 2 metatags were found
WARN: Not whitelisted
But in this topic i see https://twittercommunity.com/t/automatic-cards-whitelisting/34207
"If you are implementing Twitter Cards for the first time, all you need is the meta data in your website HTML as described in our documentation. Your Twitter Card will automatically be enabled."
Dont understand why i need add my site to whitelist and if i need to to this, how i can?