Have your players try out the TokBox WebRTC demo: <a href="https://tokbox.com/opentok/tutorials/hello-world/js/demo.html" rel="nofollow">https://tokbox.com/opentok/tutorials/hello-world/js/demo.html</a> This is the most basic WebRTC viewer. If it's not working correctly on that page, it may be something related to the user's browser/computer. It should give us a place to start.