Whitelisting /.well-known/ directory in robots.txt caused twitter cards to show up as App cards incorrectly - Cards - Twitter Developers
Twitterカードが正しく表示されない問題の解決法まとめ【ブログ|ツイッター|SNS運用】
How To Add Twitter Cards To Your Wordpress Website
🐄 John 🐄 on Twitter: "@rustybrick @vanessafox @christian_wilde Indexed & practically seen in normal search results vs not seen. It comes up often with old / removed content, site-moves, robotted URLs, etc.
Twitter card image is not showing - Cards - Twitter Developers
ERROR: Fetching the page failed because it's denied by robots.txt." - Cards - Twitter Developers
Unable to render Card preview】Twitter Card Validatorでプレビューが表示されない | Zakkuriブログ