The Master Password dialog informs you which password safe is being opened and asks you for the master password to open that password safe.
View show the password. The button text changes to Hide.
Hide hide the password. The button text changes to View.
Enter the master password and click OK.
If the master password is correct the password safe will be loaded.
If the master password is not correct an error message will be displayed.
You can attempt to load the default password safe from the Simple Password Safe Open Default Simple Password Safe.. menu.
You can attempt to load the any password safe from the Simple Password Safe Open Simple Password Safe.. menu.