Not redirecting to registration after PayPal

Hi, I do have s2Member Pro. I’m having problems getting the redirect from Paypal to go to the registration page. Insead, I get the " Thank you! (you MUST check your email before proceeding)." message. The user never gets any email about this.But, I think it’s supposed to go right back to the registration page, right? What do I look at?

Thanks,
Rick

The email has now started coming through to the user.

Is the PayPal API only if you are paying that extra monthly fee to PayPal? We are a small not-for-profit organization and so are not wanting to incur these expenses.

When I go into our PayPal account, I get the following options for API:

  1. Pre-built payment solution
  2. REST API integration
  3. Braintree SDK integration
  4. NVP/SOAP API integration (Classic)

I don’t see this mentioned in the s2Member instructions. It’s like the s2Members instructions are not what I am seeing in Paypal. Which of these does s2Member use?
Thanks!