Trouble with cPanelExtended Module for WHMCS because of WHMCS WP Integration

I am running the WHMCS to WP integration plugin.

I also have a premium module installed that integrates cPanel into the WHMCS.

When accessing the cPanel email feature while WHMCS is 'inside' the wordpress site, the module no longer works.

But when accessing the cpanelExtended module on the direct WHMCS install the module works like a charm.

The module is found here:

The address of the WP install with the WHMCS is

The WHMCS install is

For a temp access to troubleshoot, please direct message me for it.