I'm trying to embed publicly available social media pages in my Story Map (Journal) main stage area but it doesn't seem to work. I don't get an error message, but it won't display the contents of the page either. I have tried to embed a Facebook page, a Twitter feed page, and an Instagram page. None of them work. All settings on the Story Map are "public" and the social media is loading over HTTPS.
Am I doing something wrong?