Labels are shown as they appear in the Spanish version of the console.
In the widget editor, Instalar (Install) tab, set the width in Configura el ancho del formulario (px, %, em, rem or vw), click "Guardar Widget" and copy the CĂłdigo de inserciĂłn (Embed code).
No. The code is the same for all countries; the country is chosen automatically.
Check that the widget's Estado (Status) switch is on.