If you are having trouble connecting your Decora Smart Wi-Fi device to your Wi-Fi network, take note of the Status LED on the device during the enrollment process.
Put the Decora Smart Wi-Fi device in enrollment mode by pressing and holding the top of the paddle (if enrolling a wall switch) or the Control button (if enrolling a plug-in device) for 7 seconds, until the Status LED turns amber, and then release. The LED on the device should begin flashing green.
Pay attention to the Status LED during the remainder of the enrollment process. When you get to the step where the device joins your Wi-Fi network (right after you select your Wi-Fi network and enter the password), what is the color and state on the LED?
If the LED is solid green (or turns completely off if the light it is controlling is on), then please follow the steps in the following article: Device Does not Connect to Cloud
If the LED flashes amber, please make sure that you are entering the correct password for the Wi-Fi network that you are connecting to. The password is case specific. You can press the eye icon to see the text to make sure you entered it correctly.
For a step-by-step guide through the enrollment process, see the following article: Add a Decora Smart Wi-Fi Device to the My Leviton App