Dear client, if you take a look - you write an appeal on the forum, where any user can respond to your appeal.
You are directed to the "right direction" - this is to understand the settings of your PSU - after all, we did not specifically configure it.
I previously pointed out to you that the template is probably stored here
https://nautilus.crm-onebox.com/admin/mailing/template/Judging by the events - sending took place from the stage
https://nautilus.crm-onebox.com/admin/shop/workflowstatus/94/action/new/ - changes were made to the stage settings.
To solve the situation "who configured what and where" - I recommend that you contact the manager / integrator who was involved in this configuration directly.