Need help setting up GL-AR300M

I bought the version with external antennas and attached them. Then I attached the Wan port into my internet modem and powered on. The green light goes on. But I don’t see the wifi network from anywhere and when I attach my PC to it via the LAN port, I get no internet. My apple router works fine when attached. Can someone help me troubleshoot it? Or did I just get a bad one? Can I reset it or something? Thanks!

Almost forgot. The single light on the unit is solid green and not flickering or anything.

Try resetting: Overview - GL.iNet Docs

Did you get internet when you plug in the LAN cable connecting the router and your PC?

If yes, that mean WiFi radio is not turned on. Press the reset button once to toggle on/off.