Great job! You've already finished setting up the hub and connecting the monitor, let's finish setting up the monitor.
If you haven't completed these steps, please check out these articles:
If you're looking to replace your cartridge, instead of installing it for the first time, check out this article on how to replace a cartridge and battery.
Install the cartridge
Insert the cartridge in the monitor bottom first. You should hear a click. Make sure it's secure in the device.
Close the monitor
Push down on the lid of the monitor. Then twist the lid until you hear it click once. It should sound like a gas cap. Once the lid is closed, go back to your app. You should see the below screen.
If the app has not moved to the next screen, open the monitor. Make sure both the battery and cartridge are secured in place, then close the monitor.
Congratulations!! You've successfully set up your monitor. Now go back to the app to complete the rest of Sutro onboarding. It should allow you to enter your pool profile information.