You still need to buy the Iberia DLC to drive in Spain/Portugal. The base game v1.39 gives you the code to support Iberia, but you must purchase the map.
Many mods (trucks, maps, trailers) are built for v1.39 because it was the last version before major changes to the mod structure in v1.40 and v1.41. Some users prefer stability over the latest features – and v1.39 delivers that balance. You still need to buy the Iberia DLC
The mod dealer interface was enhanced, allowing players to browse, install, and manage mods more easily directly from the main menu. allowing players to browse