Right click screen---Main Menu---System---Account---Modify Pwd

 

Note: password should not contain such as &*! @ (... #% and other special characters 

If you can login NVR with a password, but can't login on App, please confirm that the password conforms to the format. 

Note:App login username and password are different from the camera login username and password. They are two different sets of username and password system.