Hello friend @fantom22, the contest is organized by Hispaliterario. There is the link to the publication, but you can write in any of these communities: Literatos, Writing club or Celf magazine. Write in English and translate to Spanish.
When you write you put the Link of your publication in the Hispaliterario publication.@hispaliterario/hispaliterario-17-cartas-que-cuentan
I hope this is clear 😘.
Greetingsl