Translate the plugin

Hi,
Sorry for the delayed reply. Plugin translation can be managed from here https://translate.ww.wp.xz.cn/projects/wp-plugins/download-manager/. However, you may also get the template file language/download-manager.pot and translate it into your language.

And for the shortcode [wpdm-all-packages], you can change the language of the table header using shortcode parameter, doc: https://www.wpdownloadmanager.com/doc/short-codes/wpdm_all_packages-list-all-downloads-in-tabular-format-in-a-page/