[Plugin: Simple Social – Sharing Widgets & Icons] data disappeared

hi, i was using the simple social sharing widgets and icons plugin and it worked fine but suddenly, data disappeared, so i don’t see anymore who tweeted/liked/stumbledupon/etc… a post. the data which was earlier nicely shown under the posts seems to be erased and it now shows all 0! what happened?

http://wordpress.org/extend/plugins/simple-social-sharing-widgets-icons/