thank youBuy it from the frontier store. Your launcher in Oculus (launch in flatscreen first time) will give you the option to install it
You buy it direct on the Frontier store then go into your dashboard and go to downloadable products to download the DLC first. After it is finished, start Oculus home and click on the three little dots to the right under the EDH launcher. Launch in desktop mode and it should be an option to upgrade above the Horizons button on the launcher screen. If it is greyed out, hover over it but don't click you mouse just hit the enter button on your keyboard.That does not work really. I bought it from the frontier store. When I launch oculus only elite horizon without any options.