Screen sharing has stopped working for me!
With Chrome and Firefox browsers, the detection of a web cam will be needed for some features of appear.in to work consistently and correctly. Screen share is one of those features. If you are having trouble screen sharing with others and do not have an internal camera you can connect an external web cam, or install a web cam emulator, such as https://manycam.com.
We currently do not have the screen sharing feature built out for the Opera browser but hope to have one in the future. For the time being the screen share feature is only available for Firefox or Chrome browsers.