Solution:
Try this !
/*
* @desc Force individual cart item
*/
function force_individual_cart_items( $cart_item_data, $product_id ){
$unique_cart_item_key = md5( microtime().rand() );
$cart_item_data['unique_key'] = $unique_cart_item_key;
return $cart_item_data;
}
add_filter( 'woocommerce_add_cart_item_data','force_individual_cart_items', 10, 2 );
/*
* @desc Remove quantity selector in all product type
*/
function remove_all_quantity_fields( $return, $product ) {
return true;
}
add_filter( 'woocommerce_is_sold_individually', 'remove_all_quantity_fields', 10, 2 );