I believe the email notifications system is broken.

For more than a month, I have been receiving the "It's your turn in the game..." emails very late. Not always, but more often than not. Some times, I get the email 8-10 hours after it is actually my turn, which often defeats the purpose of these emails. 

Just yesterday, for example, I received an "It's your turn in the game..." email 6 hours after I received the "Congratulations! You've won the game..." email for the same game!

That doesn't happen to me. Mine are as punctual as they used to be.