Resolve an “Invitation Invalid or Already Used” Error Message in Launch Control (United States, Ireland, United Kingdom)

What is causing this Error?

Waiting to register over five days from when the invitation was received will cause the invitation to become invalid.

How do I resolve this Error?

If you have waited over five days to register since the invitation was received, go to Lighthouse Business Manager and select Register/Resend Registration using the email address used in your application.