If you created a new password for the POE IP camera but forgot it, here is a method for how to reset it to the factory default settings.
1. Connect the NVR to a router by a network cable.
2. Get a computer which is also connected to the same router as the NVR and download software from below link to computer to find the POE IP camera's IP.
3. Install the reset tool. Here is link
4. Run ResetTool.exe on computer and input POE IPC's IP address. Finally, click Reset.
5. wait for 20 seconds and there will be a window come up to let you wait for rebooting. Finally, you can access the camera with its default password. The default password of the camera is blank, so the camera could be accessed without a password.