Most likely, you don't yet have an account as we do not require creating a password to subscribe or make a one-time purchase. You can follow these steps to verify whether you have an account or not.
If you've previously created an account with Ka'Chava, you can always access it at https://www.kachava.com/account/login.
If you haven't created an account yet, you can do it here: https://www.kachava.com/account/register.
Please use the same email address that you provided during checkout in order to manage your existing subscription or to view your purchase history.