A: Hello Ecky - Thank you for asking. The keyword research is done locally, so technically it should work for all languages. (I am not sure we have tested with RTL languages, but in theory those should work also.

When responding to this I realized we did not properly document how to modify for other languages, so I created a knowledge base article here - https://seoboosterpro.com/docs/hooks-and-filters/seo_booster_question_phrases-filter/ which also includes an example on how to support German language questions.