Hi there. Thanks for reporting this.This particular error, can be attributed to the status of your PayPal Pro account. If you configured a PayPal Pro Form, with one of the "Subscription" options that require "Recurring Payment Service", then you will need to add Recurring Payments to your PayPal Pro account.
https://www.paypal.com/cgi-bin/webscr?c ... ew-outsidehttps://www.x.com/thread/7093*PayPal® Pro Integration* The s2Member Pro Module makes it possible for s2Member to use PayPal® Pro Forms ( instead of standard PayPal® Buttons ). PayPal® Pro Forms integrate seamlessly with WordPress® Shortcodes. This allows you to keep Customers on your site at all times, and it consolidates the Checkout / Registration steps into a single form that you can dress up just the way you like. If you would like to take advantage of PayPal® Pro integration, please supply your PayPal® Pro API Username, Password, and Signature. You will need a PayPal® Business Account, w/Pro Service. PayPal® Pro accounts require a formal application, along with a small monthly fee. Once you have a PayPal® Pro account, you'll need access to your PayPal® Pro API Credentials. Log into your PayPal® Pro account, and navigate to Profile -> Request API Credentials. You'll choose ( PayPal® API ), and then choose ( Create Your Own ). Once you've got your API Credentials, come back and paste them into the fields below.
*( DPRP ) Recurring Billing* If you plan to use any of the ( `Subscription` ) options in the s2Member Form Generator for PayPal® Pro, you will ALSO need Recurring Billing enabled for your PayPal® Pro account. PayPal's Recurring Billing service for Pro accounts is required for all types of ( `Subscriptions` ), whether you intend for them to be recurring or not. However, it is NOT required for ( `Buy Now` ) functionality. The drop-down menus in the s2Member Form Generator, have been marked ( `Subscription` ) and ( `Buy Now` ) just for this reason. See: s2Member -> PayPal® Pro Forms. This way you can see which options will require the use of PayPal's Recurring Billing service. PayPal® will charge you a small monthly fee for their Recurring Billing service; which is an add-on for PayPal® Pro accounts.