Worldpay 3ds payment gateway integration PHP

Hi,

I need someone to help with integrating 3ds on my payment gateway.

Worldpay have enabled it from their side and we have tried to implement it from our side but it keeps saying 'pre-authorised' in worldpay online payments, and when speaking to support they said this was because the third step hadn't been properly implemented.

We have documentation for all steps and believe it's a coding / implementation error of the third step but cannot see the issue.

I need someone expert who has experience in worldpay 3ds payment gateway implementations and PHP to help and check code and our implementation.

Thanks