Admin notification custom recipient

Hello,

I setup a form, and a notification to admins. I want a custom recipient using the "Notification From" & "Notification From Name "field.
The problem is: the custom recipient doesn't show up in the email notification, instead it's the WP admin email.

Is there something wrong in what I am trying to achieve?

Using functions.php I also extended this form to send multiple custom emails with wp_email(), with a header "From: customrecipient@email.com", and the recipient shows up fine.

Why does the GF notification can't handle my custom recipient?
Thanks for your help.

The custom code I use is for sending another email, it should not interfere with the standard GF notification email.

I am talking about the GF notification email to admin. I filled the "Notification From" & "Notification From Name" fields. When receiving the email, the recipient doesn't show the "Notification From" email I typed: it's the WP admin email.