Divinity Engine DLC not showing up for me as well. I also tried re-logging, exiting steam, verifying integrity. I bought the game on Steam yesterday on the 15th, at 7:00pm EST. US Steam account. I don't own the Ascension DLC. If it's worth mentioning, under my purchase history, The game is labeled as "Divinity: Original Sin 2 Launch", just like WindraX.