If you try to set a manual time from the main device itself, not the app, for some reason it tries to go to zone 5 even though I only have 4 zones. To test, I set a manual time for 2 minutes on each zone on the device and I looked on my app and it was showing 6 zones. Now when I do the manual time via the app, it knows to stop after 4 without any issues. I had a handy man working on the sprinklers the other day and he was setting manual time for troubleshooting another issue and he discovered this problem. The issue is since there is no zone 5 and I have a pump to a well, there is a risk of burning out the pump since it is running on a zone that doesn’t exist. Not a huge deal since when running on the timer, which I set through the app, it appears to stop after zone 4. But I would like to eliminate this risk.