While you are on the site, in your browser find and click "Add to Home Screen" A CGN beaver app icon will then be created to your phone that is directly link to the site.
Note: This feature may not be available in some browsers.
Can your request for permission expire? I applied a week or so ago and heard nothing. I checked today and the permission was reset. Not really sure what that means.
They don't notify you that you have been given permission, they just make it so that you can access the EE. So if you have properly asked for permission and a few days have gone by, try to access the EE! And welcome to the candy store!