I oversee a three-year-old installation of 16 2CD2342WD-I cameras, all purchased through Amazon, and over the past six months three of them have somehow had the password changed, which is pretty much impossible because nobody else knows the passwords or even how to log in. I have tried the default admin/12345 credentials as well as the password reset tool published through this form, but I have not had any luck with either. There does not seem to be a reset button on any of them. How should I proceed? New cameras?