Can not change system user's email address: "User exists in multiple instances, can not change email."
Someone has left the company and I am using the same account, but swapping their name and email from chris@ to christine@, but it won't let me, with the error:
User exists in multiple instances, can not change email."
I even tried "forgot password" on that email to see if maybe there was another one registered in the system, but it shows that the email does not exist. I don't know what the problem is here.