The developer, , provides a specific process for activating the "Home Edition" of the simulator.

If you purchased the standalone version in the past, you can exchange your serial number for a free Steam key to add the game to your Steam library. Why "Free Keys" Should Be Avoided

Using cracked versions often leads to game-breaking bugs, such as vehicles "flying" or wheels falling off, which the developers state can only be fixed by using a licensed version.

Once you have a valid serial number, you must use the Online Activation Service to generate a unique activation key linked to your specific PC hardware (Product Code).