After logging into your account, do not forget to do the following steps in order:
1. You can log in to your email on the rambler.ru website. We will need it to log into steam and change your data.
2. Go to the steam website - store.steampowered.com/login and log in. In the upper right corner, click on "Login" - "About account"
3. In the "Contact information" section, click on "Change email address", the code for changing comes to your email (You can log in to your email on the rambler.ru website)
4. After changing your email, proceed to changing your password. To do this, in the "Account protection" section, click "Change password" and follow the instructions.
5. After these steps, you will have your account at your complete disposal.
If you have any difficulties, you can always contact the seller.