To update 3Dsellers of username/store/eBay account name changes:
Visit your eBay accounts page and use the Refresh button in the Actions column.
How To Change eBay Store Name:
For eBay Store subscribers, use this link to edit your name: https://storefront.ebay.com/psn/edit
How To Change eBay Username:
Head over to your account and click Personal Information.
Click Edit next to User ID.
Input your new username
If you have any questions, feel free to reach out to us at email@example.com