Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
By research, I find that the way to change the interface language is (instructions in English for now!...)
to choose Help & Settings
then choose the application name or the application number
which opens the application
then you use the right icon on the left for the
setting, then you use the down-arrow button to select the right language
then the interface will change back to English.
If you cannot find that in a Spanish-language interface, then consider that
1: the Interface Language would be labeled
Idioma de interfaz
2: I know enough Spanish to guide you through the in-Spanish steps for that, if I need to look them up for you, let me know.
If this helps with the issue, let me know, and/or rate my answer, please. Thanks.