u/Courier626

I was able to find the secret seven page and unlock it with the password “seven” to get the fractalverse cover art. There are two hints that appear on the page to find more covers:

Hint: Seven is an important number in the Fractalverse and appears in many different ways. . . . Use your cunning and creativity as you search this universe.

BONUS HINT: Group of people or items.

Even if I find the answer to this, where do I input the answer? The password protected page automatically links to the first cover. Can someone please help me out?