Why can't I see the button to subscribe to the hub in the hub?

Question

Habr

Hello!
"There are two ways to subscribe to the hub: through the subscription center (block on the right) on the main page or through the "Subscribe" button (in the list of all hubs or on the page of the hub itself)."
Damn, maybe I'm blind, but I can't see anything from the specified

Answer 1

via the "Subscribe" button (in the list of all hubs or on the page of the hub itself)."

The button is called "Join", it is pale blue-purple in the "Hub Information" block:
In the list of hubs, it is called "Subscribe" and appears next to the name of the hub on hover:

through the subscription center (block on the right) on the main page

And the subscription center was moved here .
That's why comments in code are evil :)