The "saving your account" error message indicates that the email address with which you are attempting to sign up is already associated with a StartEngine account. This often means that you created an account previously and are trying to sign up again, instead of logging in with the existing account.
To log in, please go to www.startengine.com/login and enter your email address and password. If you no longer remember your password, you can recover it by going to www.startengine.com/forgot-password and entering your email. An email will then be sent with a link to reset your password. Click on the link and follow the instructions provided to reset your password and log in to StartEngine.