Hi Linda. I'm Greg, a volunteer installation specialist and 8 year Windows MVP, here to help you.
Here's how to turn Two Step Verificaiton On or Off: https://support.microsoft.com/en-us/help/12408/...
If that's not the Authorization code you're getting, then what does it say at the top of the box?
I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.