I have started learning Xlights. So I bought a power supply, 4 Nodemcu boards, and one light strip. I have flashed the nodemcu with WLED and wired it all up, but the WLED will not control it. I have 5v going from the power supply to the nodemcu and lights. I have common from the power supply going to the nodemcu and lights. I have DIO pin 4 going to the data pin of the lights. I have tried using both the WLED app and the browser, but the lights will not respond. Any suggestions?