Google Funnel - shows the number of reviews but displays error "maintenance" when attempting to retrieve

I am trying to download all of our Google reviews, and was able to make some progress getting the funnel set up.  I was able to find the right search terms using the help articles and video, and the Google funnel correctly shows 97 reviews (and I set the max at 100).  Each time I try to retrieve them, the error "maintenanc" 0% shows up.  Is there a new Google limitation, or something I'm missing?