Hello,

Could you please post here the complete error message?

If the error message says that the Page can not be displayed due to license limitations, please keep in mind that you are using some features that are not available in your edition of Kentico CMS.
You need to remove them at first in order to see the live site.
Anyway, you can check the Event log for a detailed description of this limitation [Site manager -> Administration -> Event log].
Moreover, I would like to point you to the following page for a further comparison of available editions of Kentico CMS: Product editions.

Best regards,
Michal Legen