CISSP - API Security HELP

I’m trying to complete this Guided Exercise. It wants me to create a Postman account. I used maildrop.cc and I am NOT receiving any validation code. I won’t use my personal email here. Without being able to create a postman account I can’t answer this one question.

Every other question is complete, but also which means I can’t create a Lab. Can someone help?

This is the question in the exercise I can’t answer.

  1. Which endpoint (displayed in your Mybrary - Run results) has a BOLA vulnerability?

What do I do?