You’re supposed to fork the link that it shows in like the second to last bullet point on the page:
"You can build your project by forking this CodePen pen. "
OK. The link at the top is just for us to get an idea of what they’re looking for for the project.
You’re not supposed to fork that one.
They want you to fork the one towards the bottom of the page, because it has the code to check the user stories.