The issue here is that after blogging some images aren't displaying. As pictured here.
These display boxes are set in the Post; of which you can choose which format you wish. I'm going to make this change in 'standard' but you'll need to spread over to the other formats too.
Take a look at the page wp-content/themes/wpex-fashionista/formats/entry-standard.php
Look for the code
aq_resize( wp_get_attachment_url(get_post_thumbnail_id(),'full'), x, x, false );
if you change the False here to True then this will allow cropping :)