If you type in the correct password -- the original administrator password that the product ships with -- the button immediately becomes un-shadowed. Then clicking it will change the saved password in the Administrator user record back to that value. That is the only value that will unshadow the button and that can be saved by this utility.
If you have no record of this password, which would have been sent with the original installation instructions, send me an email and I will send it to you.
Bob