Using e-mail template to send invoice reminder uses the wrong template


So i’m using SuiteCRM to send invoices to clients. This all goes fine (however i think the steps to do this are way to complicated, why do i have to select a contact again when i want to email as PDF while the contact was already defined in the invoice itself?).

The problem i want to address here is that when i use the AOS system to send a reminder for an unpaid invoice it uses another e-mail template then the one i selected. Please look at the video here: