Check the LEDs on the ESP32 controller board (Usually the biggest, metallic-looking chip on the controller board).
If WLED-AP is visible:
The controller is in setup mode and not connected to your WiFi network.
Proceed with reconfiguring your WiFi settings:
Connect to WLED-AP
Navigate to 4.3.2.1 inside a browser
Go to Wifi Settings
Input your WiFI SSID and password
If WLED-AP is not visible:
The controller is likely connected to your WiFi network. Troubleshooting steps for this scenario are covered later.
You may need to log into your router to adjust settings. Use your router's app or type its IP address into a web browser. If you're unsure how to log in, search for instructions specific to your router's make and model.
SSID and Password
2.4 GHz Network
Guest Networks
WiFi/AP Isolation
Router Settings for Stability
If none of the above solutions work: