Cannot override sender address

Hello, I’ve used your plugin and Woocommerce, both of them functions well, but when I use the function as follows, from woocommerce doc #8 (“Can I adjust my “New Order” emails to show my customer’s name and email address instead of my own?” https://docs.woocommerce.com/document/email-faq/), it doesn’t work (I checked “don’t override “from” address and name). I deactivated your plugin and test this function, it works well (sender info changes that of customer’s). Also I tested with POST SMTP plugin, and it works well without issue. Can you solve this?
I’d like to continue to use your plugin along with this script. Thank you.

function custom_use_customer_from_address ( $from_email, $obj ) {
	if ( is_a( $obj, 'WC_Email_New_Order' ) ) {
		$address_details = $obj->object->get_address( 'billing' );
		if ( isset( $address_details['email'] ) && '' != $address_details['email'] ) {
			$from_email = $address_details['email'];
		}
	}
	return $from_email;
}
add_filter( 'woocommerce_email_from_address', 'custom_use_customer_from_address', null, 2 );

function custom_use_customer_from_name ( $from_name, $obj ) {
	if ( is_a( $obj, 'WC_Email_New_Order' ) ) {
		$address_details = $obj->object->get_address( 'billing' );
		if ( isset( $address_details['first_name'] ) && '' != $address_details['first_name'] ) {
			$from_name = $address_details['first_name'];
		}
		if ( isset( $address_details['last_name'] ) && '' != $address_details['last_name'] ) {
			$from_name .= ' ' . $address_details['last_name'];
		}
	}
	return $from_name;
}
add_filter( 'woocommerce_email_from_name', 'custom_use_customer_from_name', null, 2 );