I'm sorry you're having trouble with the Great Start Challenge! We've checked our database, and it appears that you are not marked as having completed the Challenge. Please visit the below URL, mark "Complete," and then answer the questions you're given.
Completing that quick survey will bring you back to the Challenge page, where you'll Challenge will be officially marked as completed.
Good luck! If you've already taken the above steps (or have any other trouble), please contact me at firstname.lastname@example.org and I'd be happy to help you troubleshoot further.