Select changed to input text

Hey, great and easy to use plugin.
I think that i might have done some changes to the function.php file, that changed plugin functionality.

So, at the start, states were shown as dropdown, everything was great, BUT when i reloaded stylesheets (ctrl + f5), fields changed from dropdown to regular input.

Btw, how can i translate default placeholder, since this code doesn’t work

add_filter( 'woocommerce_default_address_fields' , 'rename_state_province', 9999 );
 
function rename_state_province( $fields ) {
    $fields['state']['label'] = 'Miasto / Dzielnica';
    return $fields;
}