A: No. The previous owner must log in to their account and remove the device from their device list. There is no way to bypass this as it is a theft deterrent. If the seller refuses, you should return the phone.
If your device is running Android 8 or later and has a Samsung account logged in, this is the best free method. http signinsamsungcomkey free
click on unverified URL strings found in random pop-ups. http signinsamsungcomkey free