In a New Incognito Tab:
From Homepage, sign in with normal accountname (I.E 'james', not 'james@domain.com)
Once user is created, in Organizr, edit the email from the temporary placeholder to be the correct email address.
Sign into Overseer with full email address once.
Sign out of Everything (close browser)
Sign out and back in with normal displayname (I.E 'james')