Compatibility problem with "calendarize it" plugin

Hi. I have a problem with our calendarize it plugin.

In the latest versions of Oblivion theme, the content of this plugin is not shown. However, if we change to an older version (like 3.7), it works great.

We asked the creators of the plugin and they tell us which is something that may be causing by the template.

In this 2 links, the calendar should appear:

• http://rolero.org/

http://rolero.org/calendario-de-eventos/

Could you help us, please?