I have a problem with the integration of the checkbox to import the email address to my subscribers list.
What I want is to use the default email address field for my newsletter subscription in the following pages:
1) in the register form of my theme (flatsome theme)
2) in the checkout process and
3) on the account page. on the edit-account.
The addon “WP Registration Extension” doesn’t work.
How and where can I add this checkbox? Per PHP code or shortcode or something else.