I Have an  issue with my event, when I sharing content or applications . The view of attendee sees grey on screen in a few points  such as the  image below. Can anyone help me , it's very terrible to attendee experience.

Hi everyone , I have a problem with  MX700 and I need help.My video conference cannot detect audio connect , such as image below I'm tried to configure on site admin ,unpluged audio cable , check signal , restore default configure , update lastest ve...