when the user makes a new registration, I want to make a custom validation, and then follow with the register process or not.
I had try almost every hook from this page https://usersinsights.com/wordpress-user-registration-hooks-visualized/ and it seems I cannot do this. I believe the theme also has hooks to this process.
Can I override them somehow, I want to before a new user registration to be able to decide if it is to go on. thanks.