It is not working. You please take a look,
http://www.rebajabailando.com/administration/
User:admin
Password:admin123
It's not wise to post your administration password, even if it is temporary. Anyone with malicious intent can now very easily cause damage. I recommend changing it back to your original password and only sending it to people, if needed, through a private message.
Anyway, I took a look at your site and can see that Spanish is the default language option. Is there any other kind of issue you were having, or did you solve your problem yourself?
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