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 https://secure-test.wp3.rbsworldpay.com/wcc/dispatcher which is according to worldpay technical support an old domain and would need to be replaced with with https://secure-test.worldpay.com/wcc/purchase
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.