Portal Link takes users back to WHMCS install

Hi,

This was working I am sure but today I checked and;

clicking on either the Portal or the Knowledge Base link takes users back to the original (un Word Press templated) site, all other links seem to be working ok.

Non wordpress templated (problem)
https://www.youchoose.com.au/products/portal/index.php/?

Wordpress templated (working)
https://www.youchoose.com.au/products/portal/clientarea.php/?

Thanks,