To register an application on Steam, please follow all steps below:

  1. Login to Steam and go to Steam Create Api key page to create Api key.
  2. Fill "Domain Name" and select "I agree to the Steam Web API Terms of Use". If done, press "Register" button.
    Steam : Register api key
  3. After registered api key successful, you can see the "Key".
    Steam : Api key
  4. In SocialAll page, you choose tab "Networks" ---> choose "Steam" ---> fill the "Api Key" into form like image below:
    Steam : Socialall
  5. Finaly, you press "Save" button.