WORLDPAY INSTALLATION INSTRUCTIONS 1. Enable and configure WorldPay Plugin in aMember control panel. 2. Login into WorldPay Control Panel http://support.worldpay.com/admin/ and set "Callback URL" as follows http://<wpdisplay item=MC_callback> You also have to enable the callback, by checking the following box: "Callback enabled" You should also enable the printout of the receipt, by checking the box: "Use callback response" 3. Make test purchase. After your testing is done, disable testing in aMember Control Panel.