如何统一我的全球账户？
转至您的全球账户页面
您将在此处看到您的全球账户。要将其他账户统一为一个全球账户，请点击【添加账户】。您将进入新页面，以添加您的凭证。
为要添加的账户添加用户名和密码。
登录到第二个账户后，您将跳转至“全球账户”页面，并会看到这两个账户。
点击每个账户旁边的复选框，选择您想要统一的账户。
点击【统一】。
您的账户将统一为一个新的全球账户。
亚马逊官网原文详情：
How Do I Unify My Global Accounts?
Go to your Global Account page
Here you will see your Global Account. In order to unify additional accounts into a single global account click on Add accounts. You will be taken to a new page to add your credentials.
Add the username and password for the account you wish to add.
Once you log into your second account, you will be redirected to the Global Account page and will see both accounts.
Select the accounts you wish to unify by clicking the boxes next to each of the accounts.
Click Unify.
Your accounts will be unified into a new Global Account.
文章来源：亚马逊官方网站
