Load Menu

Open the Exodus Client

If you checked Create desktop shortcut during setup, you can start it from your desktop.
The location of the Exodus Client is:

%AppData%\Exodus Client\Exodus Client.exe

Navigate to the Product Page

After signing in, you will see the products you own on the left side of the app. Click on one.
If you only see the plus icon, your subscription has expired; refer to the licenses guide.

Start Red Dead Redemption 2

Launch RDR2 on your desired platform.

Install, Update or Launch

If this is your first time using Exodus RDR2 on this machine, the button on the page will instruct you to install.
In case there is an update, you will have to download the new version.

After it has been downloaded, you can click Launch.

Done

The menu will show up on your screen within a minute or two, and logs will start coming in on the page.
If the menu does not show up after 5 minutes (pressing F3 does nothing), you might want to change Graphics API in the game's settings from DirectX 12 to Vulkan, or vice versa.