Subscribe Now Button Images Broken

Hi there!

I am helping a client out and i have tried to look at all possible options to fix this. In there subscribe now feed the images for the podcast sites are all broken. So amazon, spotify, etc pictures are not showing. They are just showing broken images. I have tired loading them into the WP with no help. Can someone give me some guidance? Oh and this just happened the other day, before they were showing up fine.

Thanks!