Prepackaged Plugins Not Activated

My theme comes with Revolution Slider Plugin and i cannot find the purchase code. The forum said:

"For reference if the plugin is bundled with a theme then you don’t get a license/purchase code for the plugin.

You are able to use it as part of the theme which you bought and won’t need to ‘activate’ it for the plugin to work (that’s only for auto updates etc.).

If a new update of the slider is released then the author of the theme which you bought will update the download package"

But this is not true because the plugin is asking for a purchase code. Can someone help?

Will work without it just ignore it (you can probably hide the message)