It looks like some players are not able to play in the Anthem VIP demo just yet. When the demo started the amount of players was just a little more than what was expected. Some players are not able to do anything other than watch a loading screen. EA has issued some advice on possibly helping that issue by restarting the game. EA is working to get more servers up and running to add more spaces for those players waiting.
We're adding more server capacity to the #Anthem demo right now. Hang tight while we work to get everyone into the game.
— EA Help (@EAHelp) January 25, 2019
The best thing that you can do as a player right now is to have some patience. I know that this issues should have been easily addressed before the demo launched today. It just seems that Bioware and EA for some reason didn’t expect this to happen right from the start. Yet this is a demo and these things do happen. So while you wait to play Anthem look into some other things to do. We will kept you updated as this little hiccup continues.