??? A week later and I still cannot play the game I just bought a DLC for...

To be even more specific about when this issue began for me (should've said this in the post), I played on the new Sakhal map for a short time right when the DLC released, before the PC servers had to go down for quite a while, without this issue. Because the servers went down, I stopped playing. I tried to play again the next day, and then this issue started happening. It's happened consistently since then.