Embedded posts not showing up properly on Wordpress post


Good Day,

I tried posting an embedded tweet on my blog and it isn’t showing up properly. I went into the HTML section and posted it there and when I preview the page or post it, it shows the tweet but without the picture. It’s just a grey box with the text in it. I tried doing this on another blog (both blogs are wordpress) and it worked fine, but doesn’t on the 1st one. Any advice would rock