Plugin doesn't show product pictures

Hi Thimo,

I’m running WP3.8.1-it with WP-spreadplugin3.5 but the product pictures aren’t showed as you can see here: http://www.runlovers.it/shop/

The plugin should be properly configured (this is the code generated): [spreadplugin shop_id=”658895″ shop_locale=”it_IT” shop_api=”” shop_source=”net” shop_secret=”” shop_limit=”10″ shop_category=”” shop_subcategory=”” shop_social=”0″ shop_enablelink=”0″ shop_productcategory=”” shop_sortby=”recent” shop_linktarget=”” shop_checkoutiframe=”0″ shop_designershop=”” shop_display=”0″ shop_designsbackground=”0″ shop_showdescription=”1″ shop_showproductdescription=”0″ shop_imagesize=”280″ shop_showextendprice=”0″ shop_zoomimagebackground=”#FFFFFF” shop_design=”” shop_view=”0″ ]
(I cleared shop_api and shop_secret but they’re on my config page)

How can I fix this problem?

Thank you for your help,
Big.

http://ww.wp.xz.cn/plugins/wp-spreadplugin/