Since the Hunter update went live we've seen a slight increase in Casual Matchmaking matches failing to connect. Because of this we've disabled the new feature, Auto Re-Queue, to test if this is the cause of these failures.
Over the next few hours we'll be closely monitoring how Casual Matchmaking performs. If you're able to, please use Casual Matchmaking in order to find matches as this will allow us to get more data, more quickly.
Thank you for you patience, help and feedback on this new feature.