Integration point settings

I installed the wp integration plugin and I continue to get error when run it. Below is the error I’m receiving. I created the setting on what I understood was the right settings. But, I contine to get the below error.

How can I fix it so this plug-in will work?

Sorry this doesn’t look like a WHMCS site at Make sure your WHMCS Integration settings are pointing to the correct URL and that the WHMCS site is set for the Portal template in Setup | General.