A quick look I don't see any image and although as a human being I think that this post is perfect, it is possible that the code looks for an image tag or something similar that you don't have in the post.

Try embedding an image.

I know the rules say at least one embedded image or video. But here there is an error in the code that verifies that, so either it must search for an image or the video is not being recognized.

I would start trying that.