Allow Google to Index Universal Login Page (edit robots.txt)

Hi, I noticed that the universal login page is not indexed by Google, as it’s being blocked by robots.txt. I found that indeed the robots.txt that Auth0 defines in our tenant’s domain contains “User-agent: * Disallow: /”, which blocks Google from indexing the page. It’s quite a common use-case to index the Sign-Up and Login pages, so users who search for the main website could click on a sub-link under the main page generated by the sitemap.xml

Problem: I have not found a way to edit the robots.txt in our tenant’s domain. Is there any way to do it?

Has anyone found a way to do this?