Easy WP SMTP & Multisite

Hi,

I saw in another thread you recommended using Easy WP SMTP to someone who had email problems

I too for some reason had my multisite stop sending emails and by installing Easy WP SMTP into the main site fixed the problem and email started working again

However I have this issue.

I started working on a new demo subsite and now when I visit it I get this message

Please visit the Easy WP SMTP documentation page for usage instructions.

How do we configure things so when someone adds a new subsite, their email will work?