This can be due to the enhanced security that has been added to onMessage websites, or if the content is being displayed within the App. If the embedded content is attempting to display insecure (http://) content on a secure (https://) page, the content will be blocked. This can be verified by comparing the security of the URL in the embed widget versus the page it is displaying on.

To correct the URL in an Embed widget on a page:
  1. Go to onMessage > Website > [Site Name]
  2. Select Pages & Menus
  3. Locate the page with the embedded content
  4. Click the Wrench Icon and select Edit Page Content
  5. Click the Gear icon in the Embed widget
  6. Change the start of the URL from http:// to https://
  7. Click Save
Content embedded using Text content can be edited by:
  1. Go to onMessage > Content > Text
  2. Locate and click the Text category
  3. Click the HTML button in the top-left corner
  4. In the pop-up window, change the start of the URL from http:// to https://
  5. Click Update
  6. Click Save