Paypal sandbox question

Hey guys and gals, I am hoping someone can answer this question. I currently am running tests for my checkout procedure using sandbox. However, once I made a fake payment i am not told to check my email for registation customizations, nor am i taken back to my predetermined members page, what am i doing wrong?

Poor guy… 6 days and no response.

I can only help with making sure emails are being sent. Raam created this troubleshooting page that solved the same problem for me here:
http://www.s2member.com/kb/troubleshooting-email-delivery-problems/

Follow the directions EXACTLY, and the plugin should start working for you.

The video below may also be of assistance:

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I have been able to setup my Pro forms etc. I was successful in completing a free registration, administrator and new user notifications were received. When attempting to pay using PayPal sandbox environment, the payment is submitted and received; however, I am not redirected to complete the membership form. Am I doing something wrong?