For BrainTree only. Execute custom code before sending the Billing Failure email. Passes the user’s last successful MemberOrder object.

do_action("pmpro_subscription_cancelled", MemberOrder $old_order);

Parameters

$old_order

MemberOrder;

Source

File: https://github.com/strangerstudios/paid-memberships-pro/blob/master/services/braintree-webhook.php