I joined a Goal and played right away but it's not showing up!

Don't panic! Rock Band Blitz needs to get information from the website before it knows that you've started your Goal journey. After you start or join a Goal, you need to log in and connect to Rock Central before Rock Band Blitz will see it. If you're already connected on your console, you may need to reconnect, so just back out to the title screen of Rock Band Blitz and log in again. Then everything should sync up for you!