You need to set your link in the clickbank admin area to http://www.sampleaddress.com/scripts/clickbank.php, otherwise it will not work.

/Andreas

When I tested the script your thank you page was a missing html file in the root of your site and not the clickbank script that came with popunder exchange.

/Andreas

For it to work you need to click on the link from the members area because the script sends some variables along to clickbank. When the purchase is over the user is then redirected back to the members area. So you need to be logged in before you can test the actual purchase.

/Andreas

That is just a session ID and has nothing to do with the issue at hand. It simply helps to identify the time at which, and user from whom, the transaction occurs.

I know you say you have set your thank you page as per the instructions, but can you please tell me what page it is set to?

I'm not doubting your abilities at all here, but have you made sure clickbank.php has been uploaded to your traffic directory?

That's what I was getting