I completed every step and lab till now but I am unable to see "Which Pitch field in your file do you want to match against to set the Pitch lookup field?", i can only see match by and Which User field in your file designates record owners?
Sorry you're stuck but there's almost always a pretty easy fix! Do NOT try to start all over again, uninstall Max's Pitch Package, etc. That can make it worse. There's a 95% chance the same snag/fix is listed & answered in the Help FAQ. But if you can't find it there, post your problem here.
Make sure you post in the right category below & be sure to include a screencap showing the issue!