I created a post on the Help forum a few days ago but I can't find it on the Help FAQ page, I'm not sure where to find it so I can view it again to see the answer to my question.
In my earlier post I asked for help regarding my Salesforce account and working on the mylabs. I did Lab 1A perfectly fine, then when I logged in again to start Lab 1b, when I got to the part about pitches it didn't show any of the previous pitches I had made. It also would not let me create a new pitch no matter what I tried, so I still cannot continue with the labs because you need pitches to work on all of the labs. Maybe you can restart my account, or help me in some way so I can continue working.
Well, it when it says you cannot upgrade it means you're trying to install into an account that already has the app installed. So it won't let you install again into the same account. The grader appears to be there so you can just use it now. Have you tried that?