We're getting a lot of different posts about the same thing, so if you'd like to raise a concern, please post here. I'll keep people updated as I can.
If you're experiencing disconnects, please restart your client! We are currently addressing the issue in-game.
You can keep an eye on the status page here. Another information source is our Twitter.
If you're having an issue with an event, like Sealed, please contact our support team here.