Insert user data in the PDF

I’m trying to include user data in the PDF (not the author info, I mean the user is downloading the PDF).

In the template this code displays user data:

<?php echo esc_attr($data->display_name) ?>
<?php echo esc_attr($data->user_email) ?>
<?php echo get_user_meta($data->ID , 'st_phone' , true) ?>
<?php echo get_user_meta($data->ID , 'st_address' , true) ?>

Attempt to edit the wp-post-to-pdf-enhanced file and add something like:

$html .= ' get_user_meta($data->ID , "st_phone" , true)';
			$html .= ' get_user_meta($data->ID , "st_address" , true)';

But it does not work! Please how can show the user data in the PDF?

Thanks in advanced.

https://ww.wp.xz.cn/plugins/wp-post-to-pdf-enhanced/