I am having the same issue with our website. However we are not able to login or change passwords at all. We aren't able to access our admin page to delete the things this person has done. I also tried logging in via ftp, but that too failed. I'm guessing her has blocked any other user from accessing the website or admin panel. Is there a way around this? We have the most current update of WordPress, so that shouldn't be the issue. We need help!
Thanks so much,