DPS App Restore Button code required

We have developed a DPS app which is an Food Magazine with subscription capability through App store. The App has been rejected by Apple due to not having a “Restore” button. This button can be added by code which unfortunately is not our expertise and the App has stalled on getting the DPS App through to newsstand with subscriptions……. The below link explains what is required. [login to view URL] We use DPS App Builder and Application Loader to help submit the app to Apple. If you have the capability to assist please contact me.