I have had this kind of worst experience today, I haven't moved my head even and they started giving me messages that they are unable to see the video streaming. I don't understand their reason properly, they revoked because they were unable to see my camera, myside it seems to be okay. I have almost finished my exam with just 2 Questions left and they closed it.
It is really a pain to take out the time and preparation for exam again and more over it is expensive. This time I would go for test center rather than going through all these unexpected struggles.
Thank you for sharing your experience.