Is it possible to create coupon codes that are only available to new users/members on a site? Basically, existing users can not use the code for renewals.
Limit coupons to new users only
You can’t limit the coupons to new Users (but you CAN limit them to existing Users 
), but you could create 2 form/button shortcodes (one that accepts coupons and one that does not) and then use [s2If] conditionals to display the proper form based on whether the User is logged in or not.
Thank you. I will try that!