If you have been involved with MetaPack for a few years, you will undoubtedly have multiple accounts on either the TEST1 or TEST2 platforms (possibly both).

To link those accounts with your Development Centre account (i.e. this documentation website), you need to log in to those Test Center accounts and ensure the email address is exactly the same as you use here.

Just click the "Change password..." button in the "Personal Profile" section:

http://test1.metapack.com/dm/ActionServlet?action=setup

http://test2.metapack.com/dm/ActionServlet?action=setup

In a nutshell, the accounts that appear on the Test Centre Accounts page are those that share your email address.