Ajax register doesn't show año fields

Hi I install The ajax register plugin on my web site but doesn't show anything different of my original login form, I publish some fields to prove  The component but nothing happens, my Joomla instalation is 2.5 and I have The DownTown template for Joomla by Yootheme, please help me.

This is my website www.consumosostenible.co

I see AJAX Register working here: www.consumosostenible.co/component/users/?view=registration

If you created any extra fields you must make sure they are visible on registration and published. And that AJAX Register users plugin is enabled.

If you can't get it to work please send me the login details on mail and I will take a look.

Hi you're right, the AJAX Register is working on this http://www.consumosostenible.co/component/users/?view=registration but the fields doesn't appear and I published  all the fields on the admin, on the image I attach with this message you can see. On a mail I will sent you the login details. Thanks again.

OK, you need to update Joomla. You have v2.5.4, it doesn't work on that one for some reason. Please update to latest revision, 2.5.7 and it will work.

OK,  so I must to update Joomla, but I need to be sure that with an update of Joomla I'm gonna have any risk of lose information or may be errors on the template. You can give me some advice?

You must always run latest version of Joomla. I am not telling you to upgrade from 2.5 to 3.0. I am telling you to upgrade from 2.5.4 to 2.5.7. The update only contains bug fixes and security patches.

If you want to be sure backup your site and then update.