Hello @erikmillerkinective, unfortunately you cannot add your other account to the organization, because when you log in with the admin account, the email becomes associated with it and it detaches from the other account. and you will not be able to find the other account when searching by email in the “add member” button.
The way to do this is to follow the process that Sarath described in your other thread. It requires a 2nd user that will act as an intermediary of sorts. Can you give that a try?