I just applied for Twitter Card for my website, before applying I tested with “Try Cards” and everything was “Green” by Twitter and then it let me hit the “Request Approval” button. I filled out everything, and immidiately receive an email saying “The URL you provided for tufable.com to use the summary_large_image card did not validate. Please make sure the page contains valid metadata, then reapply for a Twitter card. Thanks for your patience. See you soon!”
Please help me what should I do now, I’m using WordPress SEO by Yoast and I already added “meta” into my website header. Please help.