Can't get xr to connect to firecontrol

Hello, I’m a complete newbie to this and I’ve set up everything step by step but can’t seem to get my xr to connect to firecontrol, also for the graphics do I need to install the one showed on the pictures or the latest version of that? It had me confused as when I went to the link it took me directly to latest version and not the one shown on the steps in the installation guide.