This is the debug procedure.
Originally Posted by abbas1
a) turn on debugging in Admin and add your email address.
b) do a test transaction.
c) look at any emails you get from worldpay to see if you have any with the subject "Callback Failure Alert From WorldPay"
now in the case of
a) not working and there being no email (check spam folders too), then worldpay is not talking to your server, either firewall, or the http://http://<wpdisplay item="MC_callback"> is not correct.
If you have c) then worldpay has gone somewhere, just not to the correct page.
c) there is a message 302 then you have been sent to the hacker page, so look at youe debug email for the word callbackPW and check that it is sending the correct password through.
If it is sending the correct password through to the correct page, and you are receiving the debug emails from your store, Then in WorldPay, the test side of the site may need to be saved to production or vice versa.
Of course the other thing that could be happening is that you don't have a worldpay account, in which case why are you installing the module