I am a beginner trying to log in to McMaster-Carr API. I have a .pfx authentication file, an API password, and my main login/password (email/account password). I have imported the .json file into postman and have inputted my main login credentials in the fields below, but I am not getting a success output message. I am confused as to where the API key/password goes and where I upload the .pfx file as well.
McMaster-Carr API: https://www.mcmaster.com/help/api/



