Facebook oneboxes not working on my forums

That’s usually due to your server IP reputation. Facebook doesn’t allow your server to get the HTML with the page and instead you are redirected to a login page.

You can try reproducing it with a cURL on the server.

On my desktop I get:

curl -s https://www.facebook.com/zuck/posts/pfbid036u4L3nsfpuufBVrA41MHiinbK5WMGLtgLnG1vQ6oHjQqwbSewJr3G2CjN5LADFQLl | htmlq 'meta[property^="og:"]'
<meta content="Mark Zuckerberg" property="og:title">
<meta content="👋🇫🇷🇪🇦 We're launching Horizon Worlds in France and Spain today! Looking forward to seeing people explore and build immersive worlds, and to bringing this to more countries soon." property="og:description">
<meta content="https://scontent.fcgh7-1.fna.fbcdn.net/v/t39.30808-6/299150825_10114625396804361_144927942652991577_n.jpg?_nc_cat=1&amp;ccb=1-7&amp;_nc_sid=8024bb&amp;_nc_ohc=YfDVgCX1ZkcAX8Zjdz8&amp;_nc_ht=scontent.fcgh7-1.fna&amp;oh=00_AT_alIn_B_hs9SgZj2MULpEABA2PWyNLoKyUkqGBmFkxzA&amp;oe=6324F6BB" property="og:image">
<meta content="https://www.facebook.com/zuck/posts/10114625397253461" property="og:url">
2 Likes