Apologies if this isn't the right place to be reporting this.

It looks like the servers are currently under maintenance. A few minutes before the Cat Quiz event (8:20PM NY Time), I noticed that my in-game server clock was lagging behind, so I tried refreshing/restarting my client to prevent any later issues. I was unable to log in afterwards, and am still unable to at the writing of this post (approximately 20 minutes later).

Was this a planned downtime/maintenance? I see no mention of it in the maintenance thread. Folks who were already logged in are still able to continue playing.