not thank you page for not log in users

I have modified woocommerce for
that allows a registered user to place an order without being logged in,

with this code:

// Create user if one does not exist
function tn_checkout_create_acct( $post_data ) {
	$user = get_user_by( 'email', $post_data['billing_email'] );
	if ( $user ) {
		$post_data['createaccount'] = 0;
	} else {
		$post_data['createaccount'] = 1;
	}
	return $post_data;
}

add_filter('woocommerce_checkout_posted_data', 'tn_checkout_create_acct');

// Attach order to existing account if user not logged in
function tn_checkout_set_customer_id( $current_user_id ) { 
	if ( !$current_user_id ) {
		$user = get_user_by('email', $_POST['billing_email']);
		if ( $user ) {
			$current_user_id = $user->ID;
		}
	}
	return $current_user_id;
} 

add_filter('woocommerce_checkout_customer_id', 'tn_checkout_set_customer_id');

If a user (not log in) places an order, the thankyou page does not appear, it asks them to log in with their username and password,

Previously I used the Custom Thank You Pages plugin it worked well
but this is not compatible with wpml

is it possible to fix this