Several of the games on that map are running very slowly due to the high numbers of units and activity taking place. This is part of the joy of being a Frontline Pioneer, as some things take more patience than usual.
If you clear your browser cache it should help the game load, and you will need to be patient on these giving them plenty of time to load.
Do keep an eye on your server state icon in the lower right. If it is spinning instead of connected that means your orders aren't reaching the server, explaining the result of them still sitting where you started.
