Not sure what wrong either but I'm guessing you were posting play after the game has started.
I've never posted one single play after the game was started.
Sometimes I receive the plays extremely late and I post them right before the game begins, but if it is late I don't post it at all.
I posted the Dodgers play 5 minutes before the start, also the game is 3h long and a lot of people can bet in play.
So, not sure what I'm doing wrong, would really like to know it.