Toro TFS-200 Flow Error

Does anyone have one of these working? Know a way to update or modify the Rachio setting used to calculate flow rate?

Installed on a rev 3. Has what appears to be a 10x flow rate error. Calibration says 1.8 GPM with some measured at 2.1 and ran for 30 mins starting at midnight. City meter says used 662 gals in the 30 min period or about 22.0666 GPM. I have another flowmeter after city supply and before the TFS-200. It reported a flow rate of about 22.0 GPM during the 30 run.