Hi there,
I've got the same problem.
Got the my new Hikvision DVR DS-7616NI-E2/8P (= 8 port POE).
and 6x bullet DS-2CD2T35-I5
But i can't add them with the Plug & Play of the DVR, i've got this error : the username or the password is wrong.
I try to manually enter the username and password...