It should now always work. I fixed the bug which now allows it to be done as many times in a row. And I have tested out every single number! So if it doesn't work for you, you've obviously answered wrongly. So stop saying it doesn't work when I know it does!
Yes, I know there's currently a bug that on your second go it doesn't delete your last go. I'll fix that now. Though on your first go if you do it properly it does work. I've tested it.
You go to tell the author and you keep pressing the button that says don't press and finally it will cry. It's quite funny if u read it though don't believe it when it says I'll wipe your progress etc.