Hello,
Please read this article – https://xstore.helpscoutdocs.com/article/30-base-theme-translation , to find your correct names for files and folders for uploading. Connect to your server via FTP software (FTP access you can get from your hosting provider) , and upload files. Then you will need to synchronize translation https://xstore.helpscoutdocs.com/article/103-translation-files-update
Regards
