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.
I too have been having issues with accessing www.wanstallsonline.com from both phone and now the desktop. I was notified of a backorder item being in but cannot access to view or purchase.
I will assume either the hordes have crashed the website due to the high demand for this item or it is simply down for whatever mundane reason.