Video Streaming not working

Good Morning - I have a pro-plan that has been used to watch videos by my son and his friends, since 2020.  Last night (and a few nights ago too) everything was shared and worked until the movie was turned on.  They could see everything that was still, even the thumbnails of the movie when I had my cursor over the fast forward - but black screen when movie was playing.  They could hear the sound.  Please help!!!  I've restarted everything, uninstalled and reinstalled the program, tried from a different computer and using a different browser without any luck.