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Thank you so much for contacting us!
As for translation issue is concerned you can get help by going to following mentioned URL.
https://xstore.helpscoutdocs.com/article/30-base-theme-translation
Related posts, Continue reading, Leave a reply, Comment – should be available for translation for XStore theme.
Follow this article https://xstore.helpscoutdocs.com/article/103-translation-files-update to update the translation files.