If you got this message when trying to update one of the premium plugins that are part of the theme package, don’t worry. The message is normal. It does not mean that you cannot update the plugins, but you just need to wait for the next theme update.
Since you got the premium plugins through the theme purchase, you cannot get purchase codes for the premium plugins. But you have full rights to use them, and you can update them through the theme. We are always including the latest versions of the premium plugins when releasing a new theme update.
So, what you need to do is to update the theme to the latest version, then navigate to Appearance – Install Slide Plugins and update the plugins. Slide Music Theme offers an automatic update for the included plugins.