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 put through an order a few days ago and opted to pay via EMT. I've been waiting for an updated invoice with the correct (price matched) total before sending payment, but have yet to hear from them.