paypal not getting added charge

We have needed to do a bit of custom development in our Ecart for a gift certificate and States with sales tax by region. I had in the past had a process working during October for Breast Cancer Awareness in which a customer can click to add a donation which we will match of $5. This all works fine except if the customer chooses PayPal express and then it fails. I am not sure what may have changed but was hoping you may be able to see the issue.

It looks like it would work to me, so I think you have to debug. I'd start by dumping the session on a page you can look at. Add a new blank page to your site and put this on the page:

<?php
@session_start();
var_dump($_SESSION);
?>

Then after you get to the checkout failure, go to that page and view the source code. It should have a lot more information that would allow you or me to figure out why it is failing going to paypal.

If you can't find it by looking at that page (view source to see it), then tell me the location of the new page and I'll take a look.

More information in private message. Thank you.

What is the GetCredits() method I see in the code? That appears to be the issue since it isn't adding the handling charge, which is where additional charges are added. I'm wondering if that is canceling the $5 donation.

I think because of the custom coding added to the cart I'd need to do this in a premier support ticket. I'd have to investigate your credit system and custom code and see if that is the issue.

The solution is either to correct the problem with the credits, or to add a separate line item by doing some further custom coding so that the donation appears in the cart directly in paypal.