From the result you are getting, it does seem the device password is no longer the default ‘opendoor’ for some reason. I am not sure how this is possible, especially since you said you’ve done a factory reset.
The only other thing I can suggest trying is to ignore password, and see what happens. To ignore password, use the following procedure:
– power off the controller, then hold the third pushbutton (B3) while powering it back on. Continue holding B3 until the LCD shows “Setup Options”
– click B3 as many times as you need until you reach the “Ignore Password” option.
– use B1 or B2 to change the value to ‘Yes’.
– Press and hold B3 until the controller restarts itself. At this point, the change to that option is saved and the controller should now ignore password. See if this allows you to log in.