Title category Yoast doesn´t work

Congratulation for events manager plugin, it´s great to use it. I have a little problem with the title of the category as a page. The tittle seo name of Yoast plugin for the category doesn´t show, however only appears the name of the category. Does anyone know to resolve this problem?

For example in this page http://www.ocioon.com/categoria/conciertos-malaga/ doesn´t show the title of seo like font code show.

Appears Conciertos – I want to show “Agenda de conciertos en Málaga..” as font code show it

http://wordpress.org/extend/plugins/events-manager/