Hube2 on "[Plugin: WP Mail SMTP] Contact Form 7 & Reply-To"

I am trying to set the reply to so that when I reply to emails sent by CF7 that I reply to the person filling out the form.

I've read all the other solutions.

This plugin seems to be working fine.

I have "Reply-To: [your-email]" in Additional headers, so no joy.

So what am I missing?

https://wordpress.org/plugins/wp-mail-smtp/