Job Type displaying shortcode on front end

I have just taken over the admin for a site that’s using Job Manager Version 0.7.20 by Gary Pendergast – when I click the link for support details it’s bringing me here so I assume this is the correct support forum!
The site is a php array to call [job_field10], [job_field11], [job_field13], [job_field14], [job_field15] but all that’s displaying on the front end is this shortcode and not the job types.

<?php $job_array = array('[job_field10]','[job_field11]','[job_field13]','[job_field14]','[job_field15]');
$prefix = '';
                               foreach(array_filter($job_array) as $jobs_array)
                               {
                                echo $prefix . '' .$jobs_array;
                                $prefix = ', ';
                                  }

?>

I also see there’s a version 0.7.25 available but I’m not seeing it as a straightforward WP update, do I need to do a clean install?

https://wordpress.org/plugins/job-manager/