ngocnhungplaza replied to the thread Will buying from someone else work if they give me back an activation code that they have already used once?.
Generally, activation codes for Aerofly FS 2 are tied to the original user’s account and can’t be reused once activated. Even if someone gives you their code, it likely won’t work unless it’s never been redeemed before. The best and safest option is to buy a new license to avoid issues with activation or support.