Invitation links for the Incogni Family and Family Unlimited plans expire after 24 hours. If your link has expired, ask the person who invited you (the account admin) to resend a new link. You can find the steps on how to do that in our article about inviting people to your Family plan.
If you’ve already begun filling out your Incogni profile, your progress will be saved, allowing you to continue where you left off with the new link.