Yes, your customers can create the account in the product designer tool.
Your customer has to press the “Customer Login” button on the top right corner of the screen and then “Create an Account”.
Now fill in the following details
First Name: Enter the first name for the account.
Last Name: Enter the last name for the account.
Email: Enter the Email address to be registered for the account.
Sign Up for Newsletter: Tick mark to sign up for the newsletter.
Password: Enter the password for this account.
Confirm Password: Re-enter the password for the confirmation of the password.
Now by pressing the “Sign Up” button, your user can create the account successfully.