Please take the complete backup of your site and share your site WP Admin and FTP or CPanel Login details in a private content area of this topic so that I’ll update the Theme for you on your site.
The translations will be lost when you update the theme that’s why we always recommend to take complete backup of the website before updating the theme.
Have you made the full backup of the site? If yes, restore the site from the backup, move your translations to folder wp-content/languages/themes/.