"The media could not be loaded, either because the server or network failed or because the format is not supported." Is shown on every video no matter what I press. VPNs don't work and resetting the page doesn't work. Been like this for over a month now it seems.
I checked the videos on my side and they are working normally. Since the issue affects all videos for you, it may be related to your connection or network. Please try a different browser or network if possible.