Can't invite deactivated user - but cant find the user to reactivate

[Greg Hubbard]

Trying to invite a new user but get this error:

'We're unable to invite deactivated accounts'
Remove or reactivate deactivated accounts, then try again

I then navigate back to users and search for all deactivated users and the user does not appear. I suspect this was a previous failed invite but can't find this anywhere