Hello Esteban,
I just checked your site and it looks like your module settings is not correct,
http://screencast.com/t/oEmvV3i5 . It should consist of the "id" which can be obtained when you are viewing the tags at the back end of EasyBlog. I have also noticed that there are no blog posts that are tagged "Evento". I have created a new blog post and tagged it under Evento and it appears correctly on the module.