Email template variables are not getting replaced by their values in SuiteCRM 7.10.7

Same problem here. I am on 7.11.9.
I am trying to get the agent’s name into the email and his full name at the end.

Still shows variables and not the names.

This has now been going on for 6 years if I look at the history of not Suite CRM being able to merge the names etc into the variables.

Why?