If your account has yet to be activated you will be prompted to activate it when trying to log into the OffSec Learning Platform. You may use the activation link in your welcome email.
If your activation link has expired, you can request a new link via the Resend option on the sign in page.
Within minutes you should receive an email with a new activation link. Click on the new Activate account link and you will be redirected to your account where you can complete your registration.