[[Schema] Adding Custom Schemas to Schema Lite - Considering to get premium theme]

Hi, 

I have a blog called mudrunlifestyle.com and it's using the Schema Lite Theme. 

I've tried adding "Person" Schema code to the about page using a custom field called "schemamarkup" and added the following code in the header.php file before closing of the </head> tag. 

<?php
$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true);
if(!empty($schemamarkup)) {
  echo $schemamarkup;
}
?>

The schema code publishes fine when I'm logged into the site. However, when I've logged out the site and viewed the following page: https://mudrunlifestyle.com/about/

The "person" schema doesn't show. I've tried removing all caching plugins and no luck. 

My question is with the premium version, can I add as much schemas as I want? I know wordpress has a habit of not showing code due to plugins. If the premium theme will sort this out. I'll order it. Sometimes with WordPress is like trying to find a needle in a haystack with issues. 

Any suggestions, would be appreciated. 

Thanks 

JK