Not OP but I too got the acceptance, then rejection, then "Everyone accepted" email.
That "everyone" count according to the email is over 15,000. The original acceptance # according to email was just 25 applicants (out of over 15,000)
It says that we don't have access to advisor, so I'm not sure what's different from the previous rejection email which said the same thing i.e. no access to advisor, but that I can "audit" the course...