Here is my suggestion to start the diagnosis: at 10am, look at the homepage in either the mobile app or web UI, or look at the LCD, does it show that the scheduled zone is running? If so, that means the software has turned it on successfully, so the issue is in hardware, it could be a problem with the controller or your sprinkler valve. If at 10am, you don’t see the zone running on the homepage, or LCD, that means it’s a firmware issue — the software didn’t even attempt to turn it on. This will help decide what’s the next step.