Thanks for contacting us.
Firstly, please follow this documentation learn more about how to translate this theme:
In addition, if you want to have language file on the child theme. You need to create the link of Child Theme folder that looks like parent theme.
Then go to Settings > General > Site Language > change your language.
- See your image, you haven't changed the name of the .mo file as our guide yet . You can follow the language code link to change the name exactly:
Please read our documentation carefully, then check it again.