To make our verification process as secure as possible, we ask that you take the photos we ask you to provide from your browser. To take a photo from your browser, you need to set the permissions for it. With most browsers you click in the address bar on the icon to the left of the website address and search for 'permissions' or 'permissions' where you can enable the camera.
If it doesn't work on your laptop or desktop PC or if you don't have a camera built in there, try it on your mobile phone!