I have integrated Google reCAPTCHA Enterprise score based solution. Everything is working fine as expected. I am able get scores from reCAPTCHA enterprise. 

Next I am planning to enhance to use MFA. As per the documentation, we need to complete email verification and before that I have completed "Ownership Verification" of my domain. In Google Search Console, i can see a message "You are a verified Owner". But when I am trying to enable Sender Name and Sender E-Mail, still I am getting "Your ownership of this domain could not be verified. Please verify your domain in the Google Search Console."

For eg. assume i have verified my ownership for domain https://example.com. and I used support@example.com as my sender email. But not sure why i am getting an error message as mentioned after completing site ownership verification.

What is missing here?