WLED-AP not showing on list of networks

I have hooked up lights, nodeNCU, did the flash step, but the WLED-AP isn’t showing up on my list of wifi networks. I am new to this process and would appreciate any suggestions.
I did have it up and working a week ago. Not sure what happened, but it isn’t available anymore. I’ve tried restarting my computer, unplugging/plugging in the nodeNCU on usb port, tried setting up a new nodeNCU. Thank you for any ideas you might have. I am trying to set up programmable Christmas lights.