The Morning After Recent Post Image Issue

Hi,

I’m using “The Morning After” theme and am having trouble getting the image in the “Recent Posts” section to show up. I’ve sized the image to be 470 pixels in width but it’s still not showing up.

Blog: https://aeliamedia.org/
The Morning After theme page: https://theme.wordpress.com/themes/themorningafter/

Any advice would be greatly appreciated! Thank you!