jeancgarciaq

Then in Rich Snippets configuration, you click on each item for example article, product, etc. and you place the text that you would like it to appear in wordpress frontend.

I was in the same situation.
The solution I found for that was: Go to my CPanel, File Manager and Copy the files es_Es.mo and es_Es.po in my case that was in public_html/wp-content/plugins/all-in-one-schemaorg-rich-snippets to the path wp-content/languages/plugins, ready is already translated.