Might be your browser or add-ons or something, on both of my devices it is visible. Also clicking in greyed out region dismisses it.

Same thing in incognito. There's no button. There's no greyed out region either.

I see, you mean the paywall part not the "Subscribe to the Newsletter" message. I misunderstood and I apologize. While rest of the article is worth reading, the main message is already in the free part: "Anthropic is changing their pricing, and it is probably because they are losing money much faster than they intended to" (e.g. bleeding out)