I just set up a branch new organization with Jira and Confluence. I created the first Space on Confluence, then went in to the space settings to configure it. None of the admin options are available, and the list of administrators includes "Former User". There are no former users, as this is a brand new org with only one user (me).

I've since created a second space which is working properly. I'd like to just delete the broken space, but since there are no valid admins it seems there is no way to do so.
Is there any other method to add an admin to a space or delete a space?