BackHub creates backups of all repositories it gets access to by default. When you give access to all repositories during the installation process, backups for all current and future repositories in the associated GitHub account will be created automatically.
BackHub checks your GitHub account for new repositories on a daily basis. If a new repository is found, a new backup is being created. As more backups for private repository are created and you reach the limit of your plan, BackHub will remind you to upgrade your plan through GitHub Martketplace to avoid interruption of service.
Read more in the FAQ about this topic.