Links in the integrated WHMCS portal page

Two questions:

1) Why does clicking Domain Checker or Order take the user off my site and into the old portal? That's not happening for Downloads, Announcements or Knowledgebase:

2) Clicking any of the links that require login take the user off my site and to the old portal's login screen:

Why is this happening? Is there a way to force login on my site before allowing them to click those links? Should I just make a page and say that clients must login before viewing the portal?