There are a number of threads here and on the Steam forum regarding DLC not installing. It is in the library as uninstalled, I've unticked and reticked the boxes, nothing happens. If you value your customers please tell us why we are having this problem. I and others look forward to your response.
Hi Cat. As TrainSim-Daniel said in the other thread you posted in, this is a long-standing problem with the steam client and not something we can fix. We have published an article on our support website guiding people on how to force steam to download content: https://dovetailgames.kayako.com/Kn...oading-my-recent-purchase-for-train-simulator