Woobox apps are made specifically for Facebook Business Pages or websites; not for personal Facebook Profiles/Timelines (you can learn more here about the difference between Pages and personal profiles). If you’re seeing the following error message when you try to install an app, you’re using a Facebook account that is not an Admin for a Facebook Business Page, or your Admin Role for the Page may not allow you to add apps/tabs to that Page.
You must have permission to add apps to at least one Facebook Page to perform the requested action.
If you don't have a Facebook Business Page and want to get started with one, you can create one here. If you are already an admin for a Page, but your current Admin Role doesn’t allow you to add custom apps/tabs, you can contact the Manager of the Page to request further action (find out who this person is by going to your Facebook Page's Admin Panel > Edit Page > Admin Roles.