WHMCS WP INTEGRATION does not work well

Hello,
I installed WHMCS WP INTEGRATION on my WP Version 4.3.1 , but after I go to clients page, I cannot see anything about WHMCS content. Keep in mind, "app" it is WHMCS and "portal" it is WP, and all of them in the same server.

Could you please advice?

Could you please remove my post from the public?
https://premium.wpmudev.org/forums/topic/i-installed-whmcs-wp-integration-on-my-wp-version-431

Thanks!
Dodi