Deleting fields in address

The Address field is a helper field. It has some options for disabling certain options such as the Address Line 2 or predefining things like the Country but ultimately it's for capturing a full address, not a partial address.

If you need to do something that the Address field doesn't do you would have to use Single Input fields and capture the information separately.

Translation is done via localization using PO files. It's assumed the site is using whatever language your WordPress site is configured for. If this isn't the case you have 3 options:

Option 1: Translate the individual sub-labels using filters and code you add to your themes functions.php file. Documentation for these filters can be found here:

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

Option 2: Localize your WordPress site by translating the POT file in gravityforms/languages and implementing that language on your WordPress site.

Option 3: Use a translation plugin such as WPML which has an add-on for Gravity Forms to translate forms.

Option 1 is the simplest and quickest method for doing partial translations.

Gravity Forms doesn't have a complete Spanish translation file included with it. So if you are using a language file included with Gravity Forms then that is why it's not going to be translated. We don't have an official Spanish translation.

If you have created your own Spanish translation file and you localized your WordPress site to Spanish and it is not working then it wasn't implemented properly. If you are trying to translate things that way I suggest you read this tutorial:

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

If you aren't creating your own translation file and localizing the plugin then you need to use the filters as I outlined above to translate the strings individually.