Hello there and welcome to the WD community.
Try installing the WD security software in order to see if by writing the password wrong 5 time then you will get a prompt stating that the drive will be erased, you will see a check box that says i understand and then you can erase the drive and the drive will not have a password anymore. If in any case you do not want to erase the drive then you can try to input the correct password and you will have to unplug the drive every certain amount of times that you fail to put the password and then plug it back in and try again.
