This is still affecting one of my friends. The game was just released to the public today, so we are all excited to play. I created a private game and sent invites out to all of my friends.
He is using Android on an HTC One m8, with version 5.0.2 of Android. He has restarted his phone and when he clicks on the link to join my game, all he gets is a black screen.
Here is a screenshot of his Version page.Hope this helps y'all identify the issue! Congrats on finally making it to Launch Day!
[Edit: I originally commented that one of my friends on iPhone could not connect, but I saw on Twitter that y'all sent a new version to the App Store. She tried that version and now she's in the game! My Android friend is still having trouble.]