Hi MB Themes
Thank you for your quick response.
I follow this instruction :-
Osclass has been translated into 28 languages, so there is no need to translate it by yourself. However, keep in mind that themes and plugins may need to be translated separately, based on words used in them.
1. Download translation you need from languages list section bellow
2. Go to your Oc-admin (backoffice) > Settings > Languages
3. Click on “Add new” button in header
4. Select .zip file you’ve download
5. Click on “Upload” button
But as you said I make mistake. How can I fix it please.
Kind Regards