When I press the play button on Steam, PSO2 NGS won't launch. I can find the launcher in the task manager and steam is saying it's playing, but nothing is happening. I had the same problem with Epic Games btw. I got it to work once by verifying the integrity of the game files in steam. But doing so it uninstalled the entire game and I had to re-download it before I got the launcher working. However after having my pc turned off, the problem is back and it won't launch. I tried to verify it again but once more it deleted the entire game.