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.
If you're using a VPN the browser will default to USD, or if you're browsing from outside the country. This is the most common reason that the website will show USD. Sometimes your keyboard language can cause that too. As mentioned there is a button at the top of the page (or bottom of the menu in mobile).