and it usually doesn't last long, just a few minutes and after that try logging in again, everything should be fine.
I think it is either the internet connection or the browser plugin stop working. Since the message is about the game video not displaying so my theory is that it has something to do about the connection,(possibly the connection dropped preventing the game to continue) or the plug-ins that have something to do with the game display.
Anyway, I have experienced a Play'n Go game Moon princess 100 having an error when I shift my currency to the EU, it took too long (a few months) before it got fixed. I did not report it since I am able to play the game in USD and JPY currency, and after sometimes it got fixed.