Unable to create a Vault on 1password.com

Given the instructions at https://support.1password.com/create-share-vaults/?mac#create-a-vault, I should see New Vault on the Home page (I guess it is the page loaded directly on <domain>.1password.com, or /home, not the items list at /app).

But there is no New Vault on any of these pages. Do I need a special permissions to do that, or is the help page somehow incorrect?