Can't add former Team Owner to Group: "You are already a member of this group"

I created a team account with my individual company login (jstearns@i1biometrics.com). Then I realized I should have used a team-ish email account for the owner, reserving my individual email account for commits.

So I added a dedicated email account to the email addresses (i1biometrics.bitbucket@gmail.com) and removed jstearns@i1biometrics.com.

Then I wanted to add jstearns@i1biometrics.com to Administrators group for this team account. BitBucket adds the user with an email icon and sends an invitation. I receive the invitation and click the link. The browser goes to the URL and prints the error:

"You have been invited to join a team
i1 Biometrics wants you to join the i1 Biometrics team
You are already a member of this group."

Repeated resends of invitation result in the same error. BitBucket thinks an email invitation is required, but responses to the invitation are rejected as unnecessary.

How do I add an email account to a group of a team account after that email account has been a team account owner?

Thanks,

Jim Stearns
i1 Biometrics
Seattle