Sega/Relic was recently pushing Company of Heroes 2 into the E-sports light at 1 point twitch even put it on the front page which boosted viewer numbers up to 10k for the day, which for a game that on average for a COH2 tournament hits 2-3k viewers was quite a leap, I don't think COH2 was built with...

Click DLC in your steam library, scroll to the bottom and install, have fun