I didn't have any problem getting into the discord, but if you are using chrome then it will block it as a pop-up. You can get around this by looking at the end of your address bar and looking for the little window like icon with the x next to it and clicking on that. Click on the link there to go ahead and open it. (Not allowed to post the link so you will have to find it yourself. My post almost got ate when I tried to post the link...)

Also those things are missing because they literally haven't finished putting those features into the game yet. Seems this game came out a bit hot, as they say. The game isn't quite feature complete yet.