Setting the module thumbnail size

Hi there-

If you go to http://www.socialraise.com/srnew/ and scroll down (the site is currently very slow, so please be patient), you'll see where we have the EasyBlog module on the Joomlart theme. However, we're trying to make the thumbnails a different size in the module settings in the backend, but the front-end doesn't seem to be reflecting the changes. Can you please have a look? I've added the site details in the private section below.

Thanks so much!

Best,
Kevin