I am trying to set up Chromeboxes to run new digital signs using Rise Vision in our building. I have set up several test presentations and several test screens. The issue I am having is that when running the player as an app on an already logged in box all of the content displays without issue. However, on another test system running in Kiosk mode the backgrounds load but none of the content. We are required to use a proxy and also SSL certificates to access the internet. Any ideas about what could be causing the issues.