I have submitted a sitemap for LINE today for
Twitter:
<div data-oembed-url="https://twitter.com/signaturitem/status/1226361955268448262"><blockquote align="center" class="twitter-tweet" data-dnt="true"><p><p dir="ltr" lang="in">my status pic.twitter.com/JYDJw5SQzy</p>— dasha (@signaturitem) February 9, 2020</blockquote><script async="" charset="utf-8" src="https://platform.twitter.com/widgets.js"></script></div>
Instagram: [pretty much same format as twitter, but using different script]
<script async="" src="//www.instagram.com/embed.js"></script>
Youtube:
<blockquote> <div data-oembed-url="https://www.youtube.com/watch?v=-0CMqrIXoc0"></div></blockquote><script async="" charset="utf-8" src="https://cdn.iframe.ly/embed.js"></script>
But none of them are showing up when they are on LINE Today. What is the right format to submit embedded content on sitemap?