The mod is free to download. Users can choose a slow free download (multiple split files) or pay a small fee (typically ~£1/$1) for a single fast download .

ProMods version 2.81 was recently released, compatible with ETS2 version 1.58. Regional Coverage:

Before downloading the map files, users must generate a custom "def" file on the ProMods website to configure settings like sound volume and vegetation detail. Summary of Pros and Cons ProMods - Index page

ProMods must be placed in a specific load order within the game’s mod manager. Incorrect ordering can lead to crashes or map misalignment (e.g., the road map appearing in the middle of the ocean).