Hello, Yorman.
I am having an issue that is the same as the first person in this ticket. I have changed the email several times in an attempt to see if one is more successful to another, or to simply restart the API request phase. For me, however, it is a green button and not blue.
Everything appears correct, and yet no API key. I get:
Sucuri: Register_site: Invalid email. Not accepted.
galaxysailor.com
email: [email protected]
Thanks so much!