Hi Quid, it's working again.
If you're still having trouble, please clear your browser cache and launch the game via FlyOrDie's official homepage: 

https://www.flyordie.com

Kind regards

There was an update across the platform where the overall number of game rooms was reduced, but the player capacity in each room was increased (from 120 to 150).  This was necessary because many rooms were sitting empty and not being used, so the change helps keep activity more balanced.