WLY
@fergusrobertson to where did you upload the file, I don't see a way you could upload a html to your project's cloud function root function itself?
I'd agree.
I am facing the same problem, it looks like cloud function domains like: "us-central1-my-project.cloudfunctions.net" can't be verified.
to me the bigger issue is, domain of cloud function links can't be verified. Don't you have the same problem @Chimbi ?