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X comes localization-ready out of the box. All that’s needed is a translation file for your language. It means that you will have the translate it in your own language because the translation files is already there. For more details about translation and how you can translate it to your own language, please check out our knowledge base:
With regards to refunds:
All sales are handled through ThemeForest, and their parent company Envato handles all refund requests. You can read more about their process here