Delete one of my secondary email addresses

Delete one of my secondary email addresses

I am trying to delete the secondary email address contactus@rbamberjewelry.com.  When I click delete, I receive the following message -- " Please contact your Organization administrator info@rbamberjewelry.com,to delete your email address."  I am logged in as administrator info@rbamberjewelry.com, so I don't understand why I can't delete it?

Help appreciated!