Digg not showing

Love the plugin. Everything has worked great up til now. All of a sudden this morning, the digg image is no longer showing on the posts or on the settings page. I checked and the link is still there, but the image is no longer loading. I don’t know if Digg made an update or if there is something else. Any help would be appreciated. Thank you!

https://www.ads-software.com/plugins/slick-social-share-buttons/