To check/edit the link's access: 
  1. Core > Communication > Content Types
  2. Select Links
  3. Search for 'Magnus'
  4. Click the gear icon on the Magnus Health link, here is the screen where you set which roles have access to the secure link:
                         User-added image

      5. Add the selected roles with the >> button such as Parent & Parent of Incoming Student
      6. Click Save