Some troubleshooting steps to take if your camera isn't working or is blank:
Ensure you've given the browser permission to use your microphone and camera - instructions for common web browsers are here:
Refresh the web page, this can often fix small glitches like the web camera being blank.
Ensure your web camera isn't covered or closed - some web cameras have covers on them that are easy to forget.
Restart your device and try again.
If none of the above steps fix the issue, please reach out to our support team using the green support button in the bottom right corner of this screen. Please include information about the device and browser you're using and and a screenshot (or video recording) of the screen & error you're seeing.