Admin screen in German

The spanish translation file in the current release is incorrect. What you need to do is FTP into your site, browse to the wp-content/plugins/gravityforms/languages folder and delete the spanish translation file that is in the folder. We will be removing it from future releases. It was supplied to us by a user and we weren't aware it was incorrect until it was pointed out to us.

Until we receive a good Spanish translation file (we aren't native Spanish speakers) we don't have one to supply to you. The translations are offered as a courtesy and are user supplied, they aren't official translations that we created. We are planning on introducing official translations later this year that we will support.

Until then you have 3 options. You can create your own Spanish translation by translating the Gravity Forms POT file using a took like POEdit. Tutorial on how to do this can be found here:

http://weblogtoolscollection.com/archives/2007/08/27/localizing-a-wordpress-plugin-using-poedit/

Or if you just want to translate specific user facing fields you can do so via hooks and some custom code you would add to your themes functions.php file. Documentation for the sub-label hooks can be found here:

http://www.gravityhelp.com/documentation/page/Developer_Docs#Sublabels

Your 3rd option is to use the WPML plugin. WPML is a translation plugin. It features a Gravity Forms Add-On that you can use to translate forms. You can find information on this here:

http://www.gravityhelp.com/gravity-forms-goes-multilingual-with-wpml/

The quickest/easiest option is going to be #2 above.

The sublabel filters for the email and confirm email are:

gform_email
gform_email_confirm

I'll see that they get added to the developer documentation. The sublabels are all in the POT file that is in the languages folder which is what you should use to translate Gravity Forms.