Hi Amin,
Oh dear, something is not quite right here. I followed the instructions on that page before raising this with you – I note that at Step Two the window is entitled
“WP eMember – Autoresponder settings”
I’m afraid that I have no such page. My Autoresponder settings page is in WP-eStore. I will send you a login by email for my site so that you can see what is installed there.
BWs
James