After payment you will receive the access details to the Steam-account, which contains the game PC Building Simulator (Steam-account).
To change the email address attached to your account, link a mobile phone number to your account.
How to start playing:
1. After successful payment, you will receive a login and password to access Steam.
2. Log in to your account using these details.
3. Change the email address attached to your account by binding a mobile phone.
4. Download and run the game.