In order to properly change the store owner, you need to complete three steps::
- Change the owner’s details in your terms of service, regulations
- Change the billing details in your admin panel (Account settings> Your Payments> Change billing details)
- and give admin panel access to the new owner. You can either give the new owner the password for the main account or create a new account (Global settings> Users Management > +User) and then select the switch that will give owner rights to the new person.