Not Generating Locations

Hi there, somewhat hoping this has happened to someone else or someone knows what to do so this can get resolved ASAP. If you add anything to your cart on the website above you will see what I’m describing.

Everything is working up until the Transdirect section where customers are able to add their delivery post codes etc. and they should receive quotes accordingly. Unfortunately, nothing happens when we enter postcodes into the relevant section.

Does anyone know what to do? Thanks!

The page I need help with: [log in to see the link]