If I set up an external tool as an administrator, (Khan Academy in my case), I can set the configuration URL for the XML. Great. But when I then try to add a Khan Academy video to a course as a teacher, I'm only offered an area to paste the launch URL, which of course isn't the same as the XML configuration URL, so Moodle doesn't recognize the tool as having already been configured. Next to the launch URL field, it says, "Tool configuration not found for this URL." What am I missing? How do I tell Moodle that I'm using the Khan Academy configuration?
In the case of Khan Academy, I don't actually need public or secret keys, so I tried to continue on and just enter the launch URL given to me by Khan Academy. When I save and then try to view it, the Khan video doesn't display. I just see a Moodle course page with only my header and no blocks. No content or Khan video. What more do I need to do to make the video appear?