Hi @Berto2002,
My understanding is, you are trying to use an email template which is defined under the "ChangeRequests" email template entity.
One of your screen grabs shows that you have the "Email Template Entity" option set to "Ignore".
The information on the "Email Template Entity" option says, 'If not supplied, this option will be set to "Requests"'.
Given this, I suspect that the node is looking for your email template under the "Requests" entity and can't find it, hence the error: "Email template not found..".
Therefore, my suggestion would be to set the "Email Template Entity" option drop down to "Manual" and then select "ChangeRequests".
Please let us know if this helps.
Many thanks,
Andy