Where's the button?

You should put an image on the 'Info' page, showing what the button looks like, and where it should appear.

@Azazello
update url match script and add picture in Info

The Button is Locate on Down Right In the Page

@TrouveMe, thanks for the clarification.

Although I still don't see the button, that's most-likely due to site changes by Youtube itself that's also breaking other scripts. I changed the rating to 'None'. let some time pass to see what will be YT stable version.