Can't see video previews or the videos, themselves.

Hi! As of yesterday, when I visit the FB site, I can no longer see the video pic/preview for the workouts; I get the title and the brief description but the picture is not there to the left. I can click on the space and the video appears to load, but when I select play, the vids all time out. Don't know if this is something on your end or mine? Any ideas on how to fix this? thanks!! :-)