Are you viewing the page over HTTPS? I can see the embed perfectly fine when going to your site with https://, but http:// will display an error (and there’s no way to avoid that, embeds on HTTP will not work)
Are you viewing the page over HTTPS? I can see the embed perfectly fine when going to your site with https://, but http:// will display an error (and there’s no way to avoid that, embeds on HTTP will not work)