No you have a classic case of something wrong-itis. The debug emails should always come through Test mode or not.

There are now two options a) you have .htaccess protected your webiste so worldpa can't get to it, but this is not very likely uless you have forgotten to mention the warning worldpay emails you would be getting.

b) Go through the Worldpay admin screen and check your settings first of all, enabling the payment reponse etc... as in the instructions and then click the save button at the bottom, and it doesn't hurt to transfer them to your production settings.

Then go and have a cup of tea because WorldPay seems to work on some kind of caching system and the passwords or settings don't always go through immediately (I once saw this with a user I was helping, we banged our heads against a brick wall, re-entered all the passwords etc... nothing happened. Once cup of tea later and it all worked). It's not even fancy tea like "Earl Grey" or "Darjeeling" just a normal cup of tea seems to work, try it YMMV.

Philip.