Thanks for getting back to me.
On the local server the page is rather forwarded to the email template which doesn't still show the recipient name.
test server we are troubleshooting on, the email is not sent at all.
I get this error on the local server using
global $patrolUsers (at the top of the template page)
<?php echo($patrolUsers->getColumnVal("MemberList"));?> (in the body)
[21-Apr-2021 21:42:36 Europe/London] PHP Notice: Undefined variable: patrolUsers in /path-to-folder/patrol/email-templates/GeneralMail.php on line 15
[21-Apr-2021 21:42:36 Europe/London] PHP Fatal error: Uncaught Error: Call to a member function getColumnVal() on null in /path-to-folder/patrol/email-templates/GeneralMail.php:15