I have the wrong WPMUDEV account attached to my WordPress installation

Hi, I just signed up for my premium membership, downloaded and installed

wpmu-dev-dashboard-3.2.4.zip, but it wouldn’t let me use my existing username “2bschool” (Perhaps I was too tired then), so I created a new username “2bschool2”–but of course that is a regular account…so, how do I attach my paid account to my WP installation?