It looks like you haven't installed the app yet.

To begin messaging with , here's what to do:

  1. Click "Connect" above.
  2. If you don't have the app already:
    1. Install the app.
    2. Login, or sign up if you don't have an account.
    3. Come back here and tap "Open App" above.
  3. Login, or sign up if you don't have an account.
  4. Tap the "Send Message" button and say hello!

The invitation you're using is either incomplete or no longer valid.

Have the person who invited you send a new invitation.