Paypal IPN

I'm trying to get the paypal IPN to work. I get thru the site setup process and when I try to Checkout, the page refreshes back to the pricing table of pro sites (http://www.brandyourfitness.com/signup/?bid=5)

I followed the directions but seems to be missing something... how can I figure out what's wrong??
http://www.brandyourfitness.com/wp-admin/admin-ajax.php?action=psts_pypl_ipn