If only the password has been changed, you can use the Forgot Password function on our login page to have a reset-password link and then a temporary password sent to your Login Email.
If the Login Email itself has also been changed, then you can email us to disclose the PayPal Email which is paying your E-junkie subscription fees, along with the Subscription ID for your E-junkie recurring payment plan from that same PayPal account. For this reason and if security is a concern, it may be a good idea, if practical, to have a separate PayPal account paying your subscription, rather than paying us from the same account where you receive buyer payments.
Honestly, we cannot recall anyone ever having contacted us for help in the sort of situation you describe, so it doesn't happen often at all. Generally, the login-recovery method that I described has only ever been necessary because either the seller entered a wrong or invalid email address for their Login Email (so the Forgot Password method would not work for them), or occasionally when the employee who had set up E-junkie for them singlehandedly wound up departing their company without disclosing the E-junkie login info they'd been using all along.