Confirmation email from 'Cimy User Extra Fields' Wordpress Plugin not being sent - need a fix

Closed - This job posting has been filled and work has been completed.
Fixed Price
Deliver by - May 29, 2013
15
Budget

Details

I have got my registration page looking how it should:
http://www.buscarlibros.com/wp-login.php?action=register
using the plugin "Cimy User Extra Fields"

However, a confirmation email should be sent to the user once they've completed the form.
I have the "Enable email confirmation" box ticked on the plugin options.

The email isn't being sent. So I need somebody to make this part work.

Thanks