If the inquiry form is on a front end page, you need to Force SSL in order for the form to display. To do this, follow these steps:
  1. School Website > Website Management > Websites
  2. Click the three dot icon next to your website and click Edit Website
  3. Click the wrench icon next to the page and click settings
  4. Click on More Options 
  5. click Force page to use SSL
  6. save & close.