WHMCS Plugin Setup

Links to services on main WHMCS within wordpress revert to main WP page. Links look like: http://craigthewebguy.com/?whmcsportalpage=whmcs%3A%2F%2Fcraigthewebguy.com%2Fclients%2Fdomainchecker.php . My WHMCS instal is at craigthewebguy.com/clients/
I'm not sure what to enter in plugin setup under "url encoder". What should i put? For remote host I put, http://craigthewebguy.com/clients/ . Does it matter what I put for default content page?