Theme translation not working

Hello,

Few months ago i bought theme from gorillatheme and tryed to translate to my native language wich isnt English. Didnt work in any way. Asked from gorillatheme no answer from them, it was 2 months ago. Their support is beyond zero. It is what it is. But i have still problem, no mather how i try it wont take my translate.
I did child theme and put functiom.php following code:

function my_translation() {load_child_theme_textdomain( 'language', get_stylesheet_directory() . '/languages' );
}
add_action( 'after_setup_theme', 'my_translation' );

its from their site. Do i need to edit this somehow? Where should my translation should be? childtheme folder or somewhere else? What else i need to do? I did child theme with Childify Me plugin.
Can u help me? What should i need to do?

Thank you in advance!
Best Regards