1) Register on the website escapefromtarkov.com
2) Go to the activation page of escapefromtarkov.com/promo/activate
3) enter the received code
4) Play and win
5) Leave a tip, otherwise a gray top will come and bite a barrel.
Answers:
1) The game will be yours forever. This is not a temporary key.
2) The key will come immediately after payment. (INSTANTLY !!) - Immediately you can play.