You may have to reset the camera by holding down the reset button until you hear a click. The reset button is at the end of the cable coming off the camera (Power, Ethernet, and Reset). This will set the default password back to "admin" (all lowercase, no quotations).
Please let us know if you have any questions:
Support Email address: email@example.com
Our Facebook: https://www.facebook.com/ZosiTechnology/
Support center: firstname.lastname@example.org