Please be aware that the keys will only be valid only for two weeks.
In order to activate and receive your skin:
- Copy the code that you’ve received from G2A after purchase
- Go here: https://www.g2a.com/in-game-actv
- Enter the code received from G2A
- Enter your trade link and click 'Activate your key'
- Finally, you simply have to accept the trade offer on your Steam account
Please note: To receive your skins, your inventory must be set to public, and your account should have no exchange restrictions set.