add media is for uploading files. for embedding youtube you just paste the url, which you did correctly, which shows the thumbnail that links to the youtube video. i thought about using native youtube embed so the video plays directly on the post, but decided against it because there are way more downsides than upsides.
that said, i can see what's happening with your post. the youtube thumbnail is not being used for the preview of the post itself. I will look into it but for now if you want to display the thumbnail on post previews, you will need to:
- attach a separate header image in addition to the youtube link
- or post as a title-less post
add media is for uploading files. for embedding youtube you just paste the url, which you did correctly, which shows the thumbnail that links to the youtube video. i thought about using native youtube embed so the video plays directly on the post, but decided against it because there are way more downsides than upsides.
that said, i can see what's happening with your post. the youtube thumbnail is not being used for the preview of the post itself. I will look into it but for now if you want to display the thumbnail on post previews, you will need to: