Can't get the Gamespot HTML 5 player to work

I receive the message 'Please use a Flash capable Browser To Watch Videos'.

I'm using Firefox 45.0.2 (32-bit) with fresh laptop / Win 10 build. No plug-ins like Ad-Block etc. I have cleared cookies and tried all of the other troubleshooting ideas in other threads. I refuse to install Flash for any site and Gamespot seems to be one of the obstinate few which hasn't made the switch from Flash (except the BBC site but that's a slow cog to move at the best of times). I've also tried this with Edge with Flash turned off and get the same error message. The YouTube channel for Gamespot works perfectly, but isn't an ideal way to get Gamespot content.

Surely Flash must be dead by now? Pleasecould you resolve this and make HTML 5 the default player?

@iago99: Anyone?? If it wasn't for Danny O'D I wouldn't even bother - any chance of listening to people?

Sorry, but we don't currently support that. We are working on it, but I don't expect it to be ready until summer.

@iago99: We tried some new levers and knobs over here, and this may now work for you - could you give it a shot?

Totally agree (esp. that last sentence) - it's the main reason I don't bother with this site anymore.

@GameSpot Given that you're celebrating two decades existence, isn't it about time you joined us in the 21st century?

Doesn't look like those levers/knobs were connected to anything - no change. (FF 46.01/Win 7-64)