I have a Gen 2 - 16 zone. Working very well. But, a slight nag when using the web app.
Using flexible daily and we have had a lot of rain in coastal NC in the past week - 10+ inches. So, I have been checking the moisture levels of my zones. Click on the zone I want, get the Edit zone page, and at the bottom I click on moisture levels. And a new blank tab, "Untitled’, opens in my browser - Chrome. I just close the tab and do have the moisture levels screen in my Rachio tab so it is no big deal. But seems to me that opening the new blank tab is not necessary and perhaps unintended. I see no reason for this to happen and thought you may not be aware of it.