I use an LMS for my work. I wanted to record a video note to add to a subject site, but a dialogue box popped up and I clicked the wrong response which blocked the camera and microphone. Now, when I go to add a video note, I get the message "Cannot access video and audio. Please allow access to your recording device using the browser." But in Firefox privacy and security settings, this website is not listed under permissions for camera or microphone. I can't see any other way to reverse what I've done. Can you help? Thanks