[SOLVED] Problems with IPN on Sandbox PayPal gatewey

Hi,
I'm working with CBSubs 3.0 and CB 1.9.1. I have two subscription plans: 1 is for free lifetime subscription and the other has a one year validity for a small price. The gateway that I'm using is PayPal Sandbox and the problem is that CBSubs doesn't seem to understand the IPN that is returning from the sandbox gateway.
In the front-end, once the payment is completed and the user returns on my website, he gets a simple error "INVALID", nothing else.
In the back-end, instead, in the notifications area CBSubs registers an error. It says:
"IPN notification not authenticating at payment gateway"
I can't understand what's wrong!
Maybe the problem is the paypal certificate, which I did not install because I don't think I need it as long as I'm not using encrypted payments and I'm using a plain-text form.


PS: The OpenSSL module is installed and running.

You don't need the PayPal certificate. It sounds like the sandbox business account is not configured properly. You need to login to the sandbox business account and configure according to the CBSubs documentation the same way you would for a live site (should be same interface, etc..). Example configuration as follows.

PayPal Business (email or secure merchant ID): Merchant ID provided after saving "Website preferences"

PayPal Main receiver account (email) (if Business is different from your main account): The email address of the business sandbox account

Your PayPal Identity Token: Token provided after adjusting "Payment Data Transfer" in "Website preferences"

Ok there must be some problems with the configuration of my sandbox business account. I also have a premiere sandbox account and if I configure CBSubs in order to receive payments on the premiere account, it all works wonderfully.
I would like to ask you another question:
Is there a way to make CBSubs confirm the payments automatically or I always need to confirm them manually, by going into the back-end in the basket area?

Thanks!

.... and I noticed that the cbsubs module doesn't work! In the front-end it doesn't show anything! :S

Is there a way to make CBSubs confirm the payments automatically or I always need to confirm them manually, by going into the back-end in the basket area?

You should never have to confirm payments. CBSubs always automatically handles the payments if your PayPal account is configured properly with IPNs. See your CBSubs documentation as it describes in detail the CBSubs configuration.

Only the Offline gateway requires manual payment confirmation by paying the basket.

.... and I noticed that the cbsubs module doesn't work! In the front-end it doesn't show anything!

The module is bugged. Please see the below topic for a quickfix.

www.joomlapolis.com/forum/277-cbsubs-gpl-support/222207-solved-warning-seterrorhandler-expects-the-argument--to-be-a-valid-callback#231733

I read the topic, done the quickfix but still no result. Any other suggestion? :dry: