Hey gang, I had to reinstall AMS2 via Steam after a HD issue. Older techie here, but LOL, I have not had the time to delve into all the finer / tech parts of this sim, Content Manager etc.... I have some DLC that I purchased, but it is not showing up after the reinstall. In Steam every DLC pack that I purchased says INSTALLED.... I appreciate any insight my fellow sim racers can provide!
Have you tried to uncheck the DLC, close Steam, then check them again? That's what I'd try. Good luck. Edit, be sure to completely close Steam, not just the window.