I import the file and 10 record process and 9 fail. Can you help me please?
Sorry you're stuck but there's almost always a pretty easy fix! Do NOT try to start all over again, eg. uninstall Max's Pitch Package, etc. That can make things worse.
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Sounds like your Pitch records has the wrong IDs because of errors importing the Pitch data in Lab 1b. You should have gotten a warning in the grader for Lab 1b telling you that was messed up and would need to be fixed before moving on. The only way to fix it is to abandon that account, get a new one and redo parts of Lab 1b and 2a so you can start 2b properly. I can give you the instructions on that and a promo code so you don't have to pay again if you email me at email@example.com