So, I own every DLC and played all of them already, so i know they worked. When i wanted to continue a savegame today, it didn't load. After further research, only one savegame actually works, from the Africa Corps DLC.
When I tried to start a new campaign, all my DLCs were not active. When clicking on the icons it asked me "Do you want to buy and install the DLC?" Clicking on it sent me on the steam shop site.
As mentioned before, I already own all DLCs, they appear in my steam library. A quick File verification with stem didn't show any corrupted files. What can I do?
Thanks in advance

Lubber