Hello Supporter,

The reason why it is being created
This dummy user create by PayPlans itself. In PayPlans 4 we have improved the checkout process.
When a guest user click on payplan subscription page, Then user directly reach at Invoice Checkout page without login/register.

Here, at this page, users can register/login as well as checkout for further process. But in actual, to show this Invoice Checkout page, PayPlans create a new invoice and subscription. Invoices and subscriptions should be attached to any user but till now we do not have any user information. So, we have created a dummy user named as not_registered.

This dummy user is created only once. As users complete the payment process subscriptions automatically attach with their user names.

Let me know if you have any query or correct me if i misunderstood.

Thank you for understanding !