Hola Diego!
Thanks for reaching out to us! I’d be happy to help you out with this.
Are you not able to make any translation work or just some strings? If some strings, please let me know which ones and/or share with me a link to where I can see them.
There may be some translation strings missing for Spanish, but will mainly depend on the current state of the translation for each language. You can check and download all our plugins translations from http://translations.theeventscalendar.com/projects/
Additionally, let me point you to the following article about translating our plugins > https://theeventscalendar.com/knowledgebase/translating-the-events-calendar/
Let me know how it goes and feel free to reach out in Spanish if you feel more comfortable doing so.
Best,
Victor