The draw back is that this plugin uses a 'paypal merchant ID' rather than a paypal account email address to connect to paypal. 'Paypal merchant ID's' are the old way of connecting to one's paypal account on a payment gateway. Now paypal can encrypt your email address address for better security. The problem of using merchant ID is that, if you have multiple emails associated with your paypal account, by using a paypal merchant ID you will have to change your primary email address just to suite the website for which you have installed this plugin. Paypal merchant account are old methods for sellers that just have one email associated to their account. Besides, many people do not even know how to find their merchant ID numbers. Even when you login into paypal it is not easy to find it. But here is a quick link to show you where your merchant ID number is. https://www.paypal.com/webapps/customerprofile/summary.view I would suggest modification for the plugin to use paypal email addresses rather than merchant ID. I still think for $20 this plugin is too expensive and should come free as an OXWALL core plugin and let developers extend on it.
Dieses Plugin ist nur nutzbar in Verbindung mit dem Plugin "Paid Membership". Also aktuell 39.00 plus nochmals 49.00 Dollar. Wenn man beide Plugins nutzt funktionieren sie, haben aber eine Sicherheitslücke beim Bezahlen der Mitgliedschaften.
Works great though the instructions need to be updated it took me a couple days of trying but I finally got it to report the finance section of oxwall, to get it to report you have to go to your paypal account and enter this in the IPN section http://www.yoursite.com/folder of oxwall on your site if any/ow_plugins/billing_paypal/controllers/order.php/notify else it wont work.