No sound? Check to ensure your mute button is not off.
Choppy video or video signal cuts out? Please try another browser. Or drag your mouse to the gear icon on bottom right hand corner to bring up the player pop-up controls. Make sure "auto" is selected - this will allow the lower bandwidth if needed.
No video and sound? Refresh the page or close the application and open it again.
For technical assistance, send an emailHEREand give a brief description of your situation.