I replaced the tee (not cheap) and made sure there is at least 7 inches down stream and QWERTY inches up stream. That made the difference. I hooked up a hose with a shut off valve to a dead grass circuit and filled a bucket multiple times representing 12 gallons. The app showed 14 gallons different before and after as compare to 33 gallons with bad setup before.
Now to see what the numbers are in the real world.
Sure can’t wait for the day when you have per zone totals and better yet a second total with per zone for the last run.