WordPress membership plugin to restrict access to content and charge recurring subscriptions using Stripe, PayPal, and more. Fully open source. 100% GPL.
According to this article the URL to use for IPN verification is: https://ipnpb.sandbox.paypal.com/cgi-bin/webscr for testing and https://ipnpb.paypal.com/cgi-bin/webscr for live, however the PMPro IPN Handler uses https://www.sandbox.paypal.com/cgi-bin/webscr and https://www.paypal.com/cgi-bin/webscr, respectively.
According to this article the URL to use for IPN verification is:
https://ipnpb.sandbox.paypal.com/cgi-bin/webscr
for testing andhttps://ipnpb.paypal.com/cgi-bin/webscr
for live, however the PMPro IPN Handler useshttps://www.sandbox.paypal.com/cgi-bin/webscr
andhttps://www.paypal.com/cgi-bin/webscr
, respectively.