Incorrect syntax in ReCaptcha's V2 image challenge instructions using language code + locale "es-MX"

I'm implementing reCAPTCHA V2 to a multilanguage website, currently "en" (international English) and "es-MX" (Spanish for Mexico).  Everything works fine, except that when the reCAPTCHA widget shows an image challenge and the user is browsing in Spanish, the syntax for the first part of the instructions are messed up. For example, when browsing in Spanish (es-MX) and the challenge is about choosing sandwich images, the text shows as: "Selecciona todas las sándwiches imágenes a continuación..." x Which is totally wrong.  A translation of that to English would be: "Select all images sandwiches below..." x Therefore, the correct text should be: "Selecciona todas las imágenes de sándwiches a continuación..." ✓ or "A continuación, selecciona todas las imágenes de sándwiches..." ✓ If I use the generic Spanish language code without locale (es), the widget use the Spanish as used in Spain, which is something different from the one used in Mexico, in consequence, some words will work, but many other would be confusing to mexican users, so it isn't an option (see images below).  For example: sandwiches (en) bocadillos (es | es-ES) - In Mexico, this word isn't a sandwich but a snack. sándwiches (es-MX) ✓ cake (en) tarta (es | es-ES) - In Mexico, this word isn't exactly a cake, is more like a tart. pastel (es-MX) ✓ I think this can't be tinkered from my developer side, since there isn't a way of customize those texts, am I right? Or, can this issue be posted as a ticket to the reCaptcha team somewhere? Thanks. (es-MX)          (es | es-ES) (es-MX)          (es | es-ES) -- You received this message because you are subscribed to the Google Groups "reCAPTCHA" group. To unsubscribe from this group and stop receiving emails from it, send an email to recaptcha+unsubscribe@googlegroups.com. To post to this group, send email to recaptcha@googlegroups.com. Visit this group at http://bit.ly/1dkFnYd. For more options, visit http://bit.ly/P65DvS.