You should simply ignore the demands of the person making the threat and not give in to their demands for payment. It's generally not a good idea to pay the ransom or give in to the demands of the person making the threat, as this can often encourage them to continue their behavior. It's also a good idea to be cautious about what info you share online and to take steps to secure your accounts, like using strong passwords and enabling two-factor authentication. If you're feeling overwhelmed or distressed, resources are available to help you, such as https://www.digitalforensics.com/blackmail.
