I finally got in touch with the U.S. representatives of Devir U.S.A. Those living in the U.S.A. (and apparently other 15 countries of Latin America and the Caribbean) interested in getting a copy of the game can contact Katy Hewitson at the following e-mail address:

katy.hewitson@devir.pt

Thank you for your interest in this design… and Enjoy 2 de Mayo!

Dani