Worldpay integration - test URL

Was wondering if anyone could help me with the Worldpay integration. Worldpay asked me to set the gateway setting to ‘test mode’ in order for them to do a test transaction, but they were unable to do a test as the payment url is incorrect. Currently, when in test mode it is set up to go to which is according to worldpay technical support an old domain and would need to be replaced with with
I don’t seem to be able to change the link myself in the settings. Any ideas?

The test URL does look like it has since been updated by Worldpay. I have referred this to a developer for further review, I have also replied to your PM.