Could you post the shortcode for the button you're selling the access with?
Also, please check that you have logging enabled and when the demotion happens again, get from the logs all the entries related to that user and post them here x'ing out any private info. WP Admin -> s2Member -> PayPal Options -> Account Details -> Enable LoggingStatistics: Posted by Cristián Lávaque — September 1st, 2011, 10:12 pm
]]>